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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Marcin Chlebowicz

Bib: 8906 •M •Age: N/A

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 49%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M45-49)
#0 / 2413
Race Day Weather
51°/41°F
overcast clouds
Personalized for Marcin

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment · 7:00/mi at mile 24.0

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Improvement Opportunities
One-time purchase · Instant access · Downloadable PDF · Shareable report

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
24:33
3.11 mi
Rank: #16196
Start → 5K
24:33 | 7:55/mi
10K
49:04
6.21 mi
Rank: #16265 (-69)
5K → 10K
24:31 | 7:54/mi
15K
1:14:37
9.32 mi
Rank: #17100 (-835)
10K → 15K
25:33 | 8:14/mi
20K
1:39:23
12.43 mi
Rank: #16779 (+321)
15K → 20K
24:46 | 7:59/mi
HALF
1:44:36
13.11 mi
Rank: #16653 (+126)
20K → HALF
5:13 | 7:40/mi
25K
2:04:50
15.53 mi
Rank: #16837 (-184)
HALF → 25K
20:14 | 8:21/mi
30K
2:30:17
18.64 mi
Rank: #16460 (+377)
25K → 30K
25:27 | 8:12/mi
20M
2:41:25
20.00 mi
Rank: #16247 (+213)
30K → 20M
11:08 | 8:12/mi
21M
2:49:30
21.00 mi
Rank: #15909 (+338)
20M → 21M
8:05 | 8:05/mi
35K
2:54:45
21.75 mi
Rank: #15581 (+328)
21M → 35K
5:15 | 7:02/mi
23M
3:03:54
23.00 mi
Rank: #15096 (+485)
35K → 23M
9:09 | 7:19/mi
24M
3:10:54
24.00 mi
Rank: #14684 (+412)
23M → 24M
7:00 | 7:00/mi
40K
3:17:04
24.85 mi
Rank: #14377 (+307)
24M → 40K
6:10 | 7:13/mi
25.2M
3:19:54
25.20 mi
Rank: #14295 (+82)
40K → 25.2M
2:50 | 8:13/mi
FINISH
3:27:19
26.22 mi
Rank: #14105 (+190)
25.2M → FINISH
7:25 | 7:17/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:42:43
Pace7:51 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:40:3124:337:5524:33
7:55
-
10K
6.21 mi11:05:0249:047:5424:31
7:54
-0:01
15K
9.32 mi11:30:351:14:378:0125:33
8:14
+0:20
20K
12.43 mi11:55:211:39:238:0024:46
7:59
-0:15
HALF
13.11 mi12:00:341:44:367:595:13
7:40
-0:19
25K
15.53 mi12:20:482:04:508:0320:14
8:21
+0:41
30K
18.64 mi12:46:152:30:178:0425:27
8:12
-0:09
20M
20.00 mi12:57:232:41:258:0511:08
8:12
0:00
21M
21.00 mi13:05:282:49:308:058:05
8:05
-0:07
35K
21.75 mi13:10:432:54:458:035:15
7:02
-1:03
23M
23.00 mi13:19:523:03:548:009:09
7:19
+0:17
24M
24.00 mi13:26:523:10:547:587:00
7:00
-0:19
40K
24.85 mi13:33:023:17:047:566:10
7:13
+0:13
25.2M
25.20 mi13:35:523:19:547:562:50
8:13
+1:00
FINISH
26.22 mi13:43:173:27:197:557:25
7:17
-0:56

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:00 /mi

Average Pace

7:55 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

40:12

19% of race

Time at Steady Pace

2:26:53

71% of race

Time at Slower Pace

20:14

10% of race

Average Pace: 7:54 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:40:3124:337:5524:33
7:55
#16196
10K
6.21 mi11:05:0249:047:5424:31
7:54
#16265
15K
9.32 mi11:30:351:14:378:0125:33
8:14
#17100
20K
12.43 mi11:55:211:39:238:0024:46
7:59
#16779
HALF
13.11 mi12:00:341:44:367:595:13
7:40
#16653
25K
15.53 mi12:20:482:04:508:0320:14
8:21
#16837
30K
18.64 mi12:46:152:30:178:0425:27
8:12
#16460
20M
20.00 mi12:57:232:41:258:0511:08
8:12
#16247
21M
21.00 mi13:05:282:49:308:058:05
8:05
#15909
35K
21.75 mi13:10:432:54:458:035:15
7:02
#15581
23M
23.00 mi13:19:523:03:548:009:09
7:19
#15096
24M
24.00 mi13:26:523:10:547:587:00
7:00
#14684
40K
24.85 mi13:33:023:17:047:566:10
7:13
#14377
25.2M
25.20 mi13:35:523:19:547:562:50
8:13
#14295
FINISH
26.22 mi13:43:173:27:197:557:25
7:17
#14105
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi16196106871068718473(Top 64%)11642(Top 71%)11642(Top 482%)
10K6.21 mi3.10 mi16265-6910700-1310700-1316373(Top 56%)10758(Top 66%)10758(Top 446%)
15K9.32 mi3.11 mi17100-83511035-33511035-33518473(Top 64%)11642(Top 71%)11642(Top 482%)
20K12.43 mi3.11 mi16779+32110904+13110904+13115903(Top 55%)10503(Top 64%)10503(Top 435%)
HALF13.11 mi0.68 mi16653+12610848+5610848+5614264(Top 49%)9894(Top 61%)9894(Top 410%)
25K15.53 mi2.42 mi16837-18410920-7210920-7217641(Top 61%)11205(Top 69%)11205(Top 464%)
30K18.64 mi3.11 mi16460+37710718+20210718+20214856(Top 51%)9916(Top 61%)9916(Top 411%)
20M20.00 mi1.36 mi16247+21310611+10710611+10714225(Top 49%)9560(Top 59%)9560(Top 396%)
21M21.00 mi1.00 mi15909+33810458+15310458+15310453(Top 36%)7719(Top 47%)7719(Top 320%)
35K21.75 mi0.75 mi15581+32810306+15210306+1527264(Top 25%)5999(Top 37%)5999(Top 249%)
23M23.00 mi1.25 mi15096+48510078+22810078+2287557(Top 26%)6099(Top 37%)6099(Top 253%)
24M24.00 mi1.00 mi14684+4129892+1869892+1866490(Top 22%)5371(Top 33%)5371(Top 223%)
40K24.85 mi0.85 mi14377+3079755+1379755+1376835(Top 24%)5528(Top 34%)5528(Top 229%)
25.2M25.20 mi0.35 mi14295+829706+499706+499718(Top 33%)7007(Top 43%)7007(Top 290%)
FINISH26.22 mi1.02 mi14105+1909607+999607+999705(Top 33%)6977(Top 43%)6977(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21
+97ft-345ft

Overall

18473

Males

11642

M45-49

11642

5K→10K

3.1 - 6.2 mi

Top 56%
×5
+79ft-138ft

Overall

16373

Males

10758

M45-49

10758

10K→15K

6.2 - 9.3 mi

Top 64%
×3
+67ft-78ft

Overall

18473

Males

11642

M45-49

11642

15K→20K

9.3 - 12.4 mi

Top 55%
×5
+106ft-86ft

Overall

15903

Males

10503

M45-49

10503

20K→HALF

12.4 - 13.1 mi

Top 49%
×2
+19ft-37ft

Overall

14264

Males

9894

M45-49

9894

HALF→25K

13.1 - 15.5 mi

Top 61%
×4
+66ft-88ft

Overall

17641

Males

11205

M45-49

11205

25K→30K

15.5 - 18.6 mi

Top 51%
×9
+181ft-148ft

Overall

14856

Males

9916

M45-49

9916

30K→20M

18.6 - 20.0 mi

Top 49%
×5
+64ft-50ft

Overall

14225

Males

9560

M45-49

9560

20M→21M

20.0 - 21.0 mi

Top 36%
×8
+106ft-24ft

Overall

10453

Males

7719

M45-49

7719

21M→35K

21.0 - 21.8 mi

Top 25%
×7
+17ft-86ft

Overall

7264

Males

5999

M45-49

5999

35K→23M

21.8 - 23.0 mi

Top 26%
×5
+23ft-63ft

Overall

7557

Males

6099

M45-49

6099

23M→24M

23.0 - 24.0 mi

Top 22%
×6
+12ft-82ft

Overall

6490

Males

5371

M45-49

5371

24M→40K

24.0 - 24.9 mi

Top 24%
×1
+6ft-20ft

Overall

6835

Males

5528

M45-49

5528

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1
+13ft-16ft

Overall

9718

Males

7007

M45-49

7007

25.2M→FINISH

25.2 - 26.2 mi

Top 33%
×2
+22ft-21ft

Overall

9705

Males

6977

M45-49

6977

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3618*
Passed By
714
Net Change
+2091
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16196
5K → 10K200200-69#16196#16265
10K → 15K38200-835#16265#17100
15K → 20K363*42+321#17100#16779
20K → HALF1282+126#16779#16653
HALF → 25K87200-184#16653#16837
25K → 30K416*39+377#16837#16460
30K → 20M229*16+213#16460#16247
20M → 21M339*1+338#16247#15909
21M → 35K328*0+328#15909#15581
35K → 23M485*0+485#15581#15096
23M → 24M412*0+412#15096#14684
24M → 40K307*0+307#14684#14377
40K → 25.2M864+82#14377#14295
25.2M → FINISH20010+190#14295#14105
TOTALS3618*714+2091

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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