I’m Başar Örsel, a mathematician, programmer and athlete based in Urla, İzmir, Turkey. I study B.Sc. Mathematics at İzmir Institute of Technology (İYTE), build websites and small systems, and train for orienteering, mountains and water. These are three parts of the same life. Here I keep the training I record and the things I build.
Former national orienteer for Turkey. Rebuilding toward the senior-elite men's team, E21E, in 2027.
Current state: detrained. Previous selection is history, not evidence of current fitness. The work now is restoring running capacity and bringing it back to the map.
The running gate is 3000 m under 10:00. It is a target, not an achieved result or a guarantee of selection.
The log below shows what the watch recorded. It cannot tell you how cleanly I navigated or whether I am ready to race.
Running and swimming sit alongside mountaineering, strength and mobility in my training. I’m rebuilding from where I am now.
Volume, pace, heart rate and the gaps between recorded sessions. This is a dated snapshot of watch data, not a live feed.
—fastest recorded rolling 5 km · historical
—longest recorded run
Historical bests do not describe today's fitness.
Full training mix / every discipline
Deduplicated sessions, grouped by FIT sport and display category. Unrecognized sports stay visible. Sub-sports retain the export's labels.
Discipline
FIT sport
Sub-sports
Sessions
Hours
km
Ascent / m
hiking
hiking
generic
6
22.116
31.7
2,499
jump rope
jump rope
generic
1
0.101
—
—
mind and body
fitness equipment
pilates
4
2.049
—
—
mind and body
training
flexibility training, yoga
13
4.603
—
—
other
generic
generic
20
5.186
—
—
running
running
generic
129
120.599
1,010.189
3,016 (54/129 recorded)
strength
training
strength training
42
14.435
—
—
swimming
swimming
open water
3
1.256
1.732
—
walking
walking
generic, indoor walking
127
45.707
229.776
1,997 (120/127 recorded)
Hours use recorded timer time. Distance and ascent are sums of recorded fields only; — means unrecorded, not zero. Partial sums show their session coverage. Indoor zero distances are export values, not inferred travel. Display precision is not sensor accuracy.
Recorded bests / achievements
Every number below is computed from this FIT export, not typed by hand. "Recorded" means the watch captured it; it is not a certified race result. Ties list every date.
Achievement
Value
Date(s)
Fastest 1 km
253 s
2026-05-14
Fastest 3 km
878 s
2026-05-14
Fastest 5 km
1500 s
2026-05-10
Fastest 10 km
3099 s
2026-05-10
Fastest half marathon
6759 s
2026-05-10
Longest run
31.01 km
2026-05-17
Biggest running week
72.8 km
2026-W09
Biggest running month
225.1 km
2026-04
Highest recorded heart rate
202 bpm
2026-08-25
Biggest single-session ascent
1067 m
2026-08-05
Biggest ascent day
1110 m
2026-08-05
Longest hike
6.25 km
2026-08-04
Longest swim
0.97 km
2026-06-15
Fastest swim pace
140.9 s/100m
2026-08-06
Most strength sessions in a week
7
2025-12-22
Most strength sessions in a month
12
2025-12
Most mobility sessions in a week
3
2026-03-02, 2026-07-13
Hike longest timer session
6:20:35
2026-08-05
Strength longest timer session
0:54:58
2026-03-12
Mobility longest timer session
0:37:49
2026-08-12
Most mobility sessions in a month
5
2026-03, 2026-07
Longest mapped swim / recorded session distance
0.969 km
2026-06-15
Rolling split coverage (qualifying windows / runs): k1: 120/129; k3: 116/129; k5: 95/129; k10: 34/129; hm: 6/129. Other field coverage is listed in Data coverage below; discipline tabs include record-specific measured counts.
Running splits are sampled rolling elapsed-time windows with plausibility filters, not certified race PBs. Running totals use recorded distance; highest HR uses session maxima. Discipline records exclude missing fields; measured counts and tied dates are detailed in each discipline tab. Longest time on feet uses timer time, excluding pauses. Swim pace uses paired positive timer and distance; conditions differ.
Read the limits. Rolling splits are GPS-derived, not certified race results. Heart-rate load is a model, not a fitness test. Missing logs are not proof of inactivity. Methods & source ↓
Monthly running volume
Weekly volume
km per ISO week, zero weeks included — gaps stay visible
Aerobic efficiency
quarterly means · pace (min/km, solid) / HR (bpm, dashed) · independent scales; not a controlled test
Recorded runs
runs >500 m and pace <12 min/km · distance (x) / pace (y) · opacity = recency
Fitness · fatigue · form
Aerobic decoupling
speed/HR change between halves · qualifying runs ≥40 min · +5% reference, not a diagnosis
The territory
Outlined break-point markers indicate likely stops / break points: speed below 0.5 m/s for more than 120 seconds. GPS gaps over 30 seconds are excluded; slow movement and GPS error can still look like stops.
Long runs — half marathon and beyond
Records & structure
Running personal bests · fastest recorded rolling splits and support work · not race-certified or current fitness
Swimming / recorded training
Recorded swims, with distance and pace where the watch supplied them. Pool and open-water conditions differ.
Per-session distance
Whole-session pace
Combined swim + run volume
Sessions
Recorded km
Timer hours
132
1,011.922
121.854
Distance is a sum across disciplines, not an equivalent training load or an event result.
3
Sessions
1.256
Timer hours
1.732
Distance / km
4:21 /100 m
Pace / timer time
Dates and calendar periods: Europe/Istanbul. Durations are timer time, excluding pauses. Partial totals identify measurement coverage.
Distance-weighted pace uses paired positive distance and timer time: 3/3 sessions. Pool and open-water conditions are not equivalent; this is whole-session pace, not a fastest split.
Recorded bests
Bests in this export, not current fitness or certified results. All tied dates are listed. Missing measurements are excluded; partial-day ascent is a recorded sum.
0:36:29
Longest session
2026-06-15 · 3/3 measured / eligible
0.969
Longest swim / km
2026-06-15 · 3/3 measured / eligible
2:21 /100 m
Fastest whole-session pace
2026-08-06 · 3/3 measured / eligible
Recorded periods and session receipts
Month
Sessions
Timer hours (coverage)
2026-06
1
0.608 (1/1 recorded)
2026-07
1
0.594 (1/1 recorded)
2026-08
1
0.054 (1/1 recorded)
Session receipts
Date
FIT sport
FIT sub-sport
Timer / h:mm:ss
km
Pace / min:sec per 100 m
2026-06-15
swimming
open_water
0:36:29
0.969
3:46 /100 m
2026-07-27
swimming
open_water
0:35:38
0.626
5:42 /100 m
2026-08-06
swimming
open_water
0:03:13
0.137
2:21 /100 m
Swim map / recorded GPS
Simplified, projected GPS traces; no basemap, not for navigation. Swim type comes from FIT metadata, not the shape of a trace. Sessions without GPS say “no GPS trace recorded”; pool GPS is not plotted.
No cycling data in this FIT export. A bike split is not claimed; triathlon-oriented training here means swim + run only.
Mountaineering / hiking
Mountaineering is inferred from FIT hiking and recorded ascent, not a distinct mountaineering sport. Recorded ascent, not summit elevation or a claim of technical climbing.
Per-session distance
Per-session ascent
Monthly recorded ascent
6
Sessions
22.116
Timer hours
31.7
Distance / km
2,499
Total elevation gained / m
Dates and calendar periods: Europe/Istanbul. Durations are timer time, excluding pauses. Partial totals identify measurement coverage.
Recorded bests
Bests in this export, not current fitness or certified results. All tied dates are listed. Missing measurements are excluded; partial-day ascent is a recorded sum.
Simplified, projected GPS traces; no basemap, not for navigation. Sessions without GPS say "no GPS trace recorded".
2026-08-04 · 6.248 km · 655 m ascent2026-08-05 · 6.047 km · 1,067 m ascent2026-08-05 · 2.349 km · 43 m ascent2026-08-06 · 5.188 km · 350 m ascent2026-08-06 · 6.073 km · 360 m ascent2026-08-08 · 5.796 km · 24 m ascent
Hike elevation profiles
Watch-derived altitude by distance; can contain GPS altitude error.
2026-08-042262–2911 m
2026-08-052927–3934 m
2026-08-053517–3931 m
2026-08-062898–3247 m
2026-08-062914–3248 m
2026-08-082263–2906 m
Strength / recorded training
Monthly sessions
Monthly timer hours
Weekly frequency
42
Sessions
14.435
Timer hours
Dates and calendar periods: Europe/Istanbul. Durations are timer time, excluding pauses. Partial totals identify measurement coverage.
Recorded bests
Bests in this export, not current fitness or certified results. All tied dates are listed. Missing measurements are excluded; partial-day ascent is a recorded sum.
0:54:58
Longest session
2026-03-12 · 42/42 measured / eligible
7
Most sessions / week starting Monday
2025-12-22 · 19/19 measured / eligible
12
Most sessions / calendar month
2025-12 · 10/10 measured / eligible
Recorded periods and session receipts
Month
Sessions
Timer hours (coverage)
2025-04
5
0.742 (5/5 recorded)
2025-05
1
0.149 (1/1 recorded)
2025-06
3
0.492 (3/3 recorded)
2025-11
2
0.651 (2/2 recorded)
2025-12
12
3.018 (12/12 recorded)
2026-02
2
1.358 (2/2 recorded)
2026-03
5
2.866 (5/5 recorded)
2026-04
3
1.42 (3/3 recorded)
2026-07
5
1.939 (5/5 recorded)
2026-08
4
1.8 (4/4 recorded)
Session receipts
Date
FIT sport
FIT sub-sport
Timer / h:mm:ss
2025-04-27
training
strength_training
0:08:54
2025-04-27
training
strength_training
0:08:51
2025-04-28
training
strength_training
0:08:49
2025-04-30
training
strength_training
0:09:05
2025-04-30
training
strength_training
0:08:51
2025-05-01
training
strength_training
0:08:55
2025-06-01
training
strength_training
0:09:55
2025-06-10
training
strength_training
0:09:44
2025-06-11
training
strength_training
0:09:53
2025-11-27
training
strength_training
0:30:00
2025-11-28
training
strength_training
0:09:05
2025-12-07
training
strength_training
0:33:22
2025-12-11
training
strength_training
0:02:00
2025-12-14
training
strength_training
0:25:43
2025-12-19
training
strength_training
0:30:00
2025-12-21
training
strength_training
0:30:00
2025-12-22
training
strength_training
0:05:00
2025-12-23
training
strength_training
0:05:00
2025-12-24
training
strength_training
0:05:00
2025-12-25
training
strength_training
0:05:00
2025-12-26
training
strength_training
0:05:00
2025-12-27
training
strength_training
0:05:00
2025-12-28
training
strength_training
0:30:00
2026-02-10
training
strength_training
0:50:00
2026-02-16
training
strength_training
0:31:29
2026-03-09
training
strength_training
0:27:00
2026-03-10
training
strength_training
0:30:00
2026-03-11
training
strength_training
0:30:00
2026-03-12
training
strength_training
0:54:58
2026-03-13
training
strength_training
0:30:00
2026-04-01
training
strength_training
0:05:00
2026-04-20
training
strength_training
0:40:26
2026-04-27
training
strength_training
0:39:47
2026-07-18
training
strength_training
0:35:00
2026-07-19
training
strength_training
0:30:00
2026-07-19
training
strength_training
0:15:24
2026-07-19
training
strength_training
0:15:54
2026-07-20
training
strength_training
0:20:01
2026-08-12
training
strength_training
0:47:47
2026-08-13
training
strength_training
0:20:02
2026-08-21
training
strength_training
0:20:07
2026-08-22
training
strength_training
0:20:04
Strength / muscle heatmap
Inferred by matching workout timestamps/dates against the routine log; a programmatic estimate, not biometric measurement. Historical sessions use the approved routine union, not exercise-level FIT evidence.
Intensity means attributed sessions, not force, fatigue or measured muscle activation. Equal historical intensities reflect the mapping assumption.
Schematic body model, not anatomical segmentation. Pale = fewer sessions; solid = the largest count in this view. Outlined = no attributed sessions.
Mobility / recorded training
Mind-and-body FIT categories are a mobility proxy, not proof of a specific mobility exercise or measured range of motion. Original sport labels are retained below.
Monthly sessions
Monthly timer hours
Weekly frequency
17
Sessions
6.652
Timer hours
Dates and calendar periods: Europe/Istanbul. Durations are timer time, excluding pauses. Partial totals identify measurement coverage.
Recorded bests
Bests in this export, not current fitness or certified results. All tied dates are listed. Missing measurements are excluded; partial-day ascent is a recorded sum.
0:37:49
Longest session
2026-08-12 · 17/17 measured / eligible
3
Most sessions / week starting Monday
2026-03-02, 2026-07-13 · 9/9 measured / eligible
5
Most sessions / calendar month
2026-03, 2026-07 · 5/5 measured / eligible
Recorded periods and session receipts
Month
Sessions
Timer hours (coverage)
2025-12
1
0.522 (1/1 recorded)
2026-02
3
1.38 (3/3 recorded)
2026-03
5
2.28 (5/5 recorded)
2026-07
5
1.194 (5/5 recorded)
2026-08
3
1.277 (3/3 recorded)
Session receipts
Date
FIT sport
FIT sub-sport
Timer / h:mm:ss
2025-12-31
fitness_equipment
pilates
0:31:18
2026-02-16
training
yoga
0:28:00
2026-02-27
training
flexibility_training
0:24:08
2026-02-27
fitness_equipment
pilates
0:30:39
2026-03-02
training
yoga
0:28:32
2026-03-05
fitness_equipment
pilates
0:32:36
2026-03-07
training
flexibility_training
0:23:34
2026-03-10
training
yoga
0:23:45
2026-03-12
fitness_equipment
pilates
0:28:21
2026-07-17
training
flexibility_training
0:19:09
2026-07-18
training
flexibility_training
0:11:27
2026-07-19
training
flexibility_training
0:12:38
2026-07-20
training
flexibility_training
0:16:35
2026-07-22
training
flexibility_training
0:11:48
2026-08-12
training
flexibility_training
0:37:49
2026-08-21
training
flexibility_training
0:16:26
2026-08-22
training
flexibility_training
0:22:20
Mobility / muscle heatmap
Inferred by matching workout timestamps/dates against the routine log; a programmatic estimate, not biometric measurement. Historical sessions use the approved routine union, not exercise-level FIT evidence.
Intensity means attributed sessions, not force, fatigue or measured muscle activation. Equal historical intensities reflect the mapping assumption.
Schematic body model, not anatomical segmentation. Pale = fewer sessions; solid = the largest count in this view. Outlined = no attributed sessions.
Data coverage
Counts describe what the FIT export contains, not what happened outside the watch. Recorded zero values count as present. GPS counts require a usable projected route; indoor routes are excluded. Elevation counts describe retained profiles, not every altitude sample. HR includes summary or record samples.
Category
Sessions
Distance
Timer
Ascent
HR
GPS route
Elevation profile
Exercise detail
hiking
6
6
6
6
6
6
6
0
jump_rope
1
0
1
0
1
0
0
0
mind_and_body
17
0
17
0
17
0
0
0
other
20
0
20
0
20
0
0
0
running
129
129
129
54
129
117
6
0
strength
42
0
42
0
41
0
0
0
swimming
3
3
3
0
3
3
0
0
walking
127
127
127
120
127
122
0
0
Exercise detail counts sessions containing FIT set messages. Routine attribution is separate evidence from routines.md; it does not supply recorded sets, repetitions or load.
Training mix / monthly timer hours
Europe/Istanbul calendar months. Missing timer fields are excluded; empty months mean no sessions in this export. Hours compare recorded duration, not effort.
122/127 sessions have usable GPS. Simplified, projected traces; no basemap, not for navigation. Recorded session distance is not measured from the drawing.
Historical attribution applies before 2026-09-08 in Europe/Istanbul. Exact timestamp logs take precedence over date logs. After the cutoff, unmatched sessions remain unmatched. Historical muscle groups are program attribution, not proof of exercise or biometric load.
Session summaries supply distance and timer time. Duplicate start-time/sport records are removed. Distance totals reconcile against monthly and weekly sums, within rounding tolerance. Weeks without a recorded run remain visible.
Best splits use a rolling distance window between sampled record frames. They are not race results. Route drawings use simplified, projected GPS traces; they omit a basemap and are not for navigation. Only location clusters are drawn; other traces are counted separately.
Banister TRIMP uses average heart rate, the highest recorded HR and an explicitly assumed resting HR. The load curves are exponentially weighted averages, initialized at zero. They are not measured fitness or a prescription. The form value is chronic minus acute load.
Decoupling compares speed/HR between halves, after excluding the warm-up and filtering movement records. Quarterly averages combine different routes, conditions and intensities; pace and HR have separate scales. Elevation is watch-derived and can contain altitude error. Calories are watch estimates.
Targets in Athlete are goals, not telemetry. The current-state description is self-reported. This snapshot does not establish readiness for selection.
I build hand-coded websites and small systems, including Raspberry Pi and RFID experiments. Through Orsel Studio, I work on WooCommerce, AI and search. The projects below link to their source and explain their scope.
Production
HTML + Python / live site
basarorsel.com
HealthFit exports become an embedded training ledger. Python aggregates the record; dependency-free SVG draws volume, routes and inferred routine exposure.
An event and society registration experiment with an RFID reader script. Related RHT_RFID code includes Arduino and Python server components. These are prototypes, not verified production attendance systems.
The raspberry-pi-web-server repository records a Pi hosting experiment. RFID and object detection also appear in the InoReg fork below; that implementation has upstream authors and is not presented as my original work.
A receipt-analysis and carbon-estimation experiment with Python, a web interface and tests. Its estimates, accuracy and compliance claims have not been independently validated; this is not a certified environmental accounting tool.
I study topology and knot theory, and I’m interested in machine learning and LLM evaluation. This is ongoing study; I don’t present it as a finished research project.
A fork of NOMANSAEEDSOOMRO/Attendance-System: RFID and object detection using Raspberry Pi. Listed as a study reference, not an original implementation or a verified deployment by me.
AutoGPT and esp-rfid are upstream projects represented by forks in my account. Their functionality and authorship belong to their maintainers; a fork is not a contribution claim.
Raw FIT files stay local. The aggregate contains training summaries and simplified route shapes. No framework, CDN, tracker, account or runtime network request is required.
04 — Identity
A little context.
I’m Başar Örsel, a mathematician, programmer and athlete based in Urla, İzmir, Turkey. I study B.Sc. Mathematics at İzmir Institute of Technology (İYTE), build websites and small systems, and train for orienteering, mountains and water. These are three parts of the same life. My interests in mathematics include topology, knot theory, machine learning and LLM evaluation. I use he/him pronouns.
