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BOSTON MARATHON 2025

Jan Seidl

Bib: 7038•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 17%
Division (M18-39)
#0 / 5642
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:16
Rank: #3989
Start → 5K
20:16 | 6:31/mi
10K· 6.21 mi
40:33
Rank: #3951 (+38)
5K → 10K
20:17 | 6:32/mi
15K· 9.32 mi
1:00:51
Rank: #3871 (+80)
10K → 15K
20:18 | 6:32/mi
20K· 12.43 mi
1:21:25
Rank: #3829 (+42)
15K → 20K
20:34 | 6:37/mi
Half· 13.11 mi
1:25:49
Rank: #3802 (+27)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:41:49
Rank: #3718 (+84)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:02:44
Rank: #3563 (+155)
25K → 30K
20:55 | 6:44/mi
20M
2:12:03
Rank: #3493 (+70)
30K → 20M
9:19 | 6:51/mi
21M
2:19:19
Rank: #3457 (+36)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:24:03
Rank: #3345 (+112)
21M → 35K
4:44 | 6:20/mi
23M
2:32:29
Rank: #3217 (+128)
35K → 23M
8:26 | 6:44/mi
24M
2:38:59
Rank: #3123 (+94)
23M → 24M
6:30 | 6:30/mi
40K· 24.85 mi
2:44:35
Rank: #3023 (+100)
24M → 40K
5:36 | 6:33/mi
25.2M
2:47:03
Rank: #2980 (+43)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:53:36
Rank: #2925 (+55)
25.2M → Finish
6:33 | 6:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:49
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:27:47
Pace6:42 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:5920:166:3120:16
6:31
-
10K
6.21 mi10:48:1640:336:3220:17
6:32
+0:01
15K
9.32 mi11:08:341:00:516:3220:18
6:32
0:00
20K
12.43 mi11:29:081:21:256:3320:34
6:37
+0:05
Half
13.11 mi11:33:321:25:496:334:24
6:27
-0:10
25K
15.53 mi11:49:321:41:496:3316:00
6:36
+0:09
30K
18.64 mi12:10:272:02:446:3520:55
6:44
+0:08
20M
20.00 mi12:19:462:12:036:369:19
6:51
+0:07
21M
21.00 mi12:27:022:19:196:387:16
7:16
+0:25
35K
21.75 mi12:31:462:24:036:374:44
6:20
-0:56
23M
23.00 mi12:40:122:32:296:388:26
6:44
+0:24
24M
24.00 mi12:46:422:38:596:376:30
6:30
-0:14
40K
24.85 mi12:52:182:44:356:375:36
6:33
+0:03
25.2M
25.20 mi12:54:462:47:036:382:28
7:09
+0:36
Finish
26.22 mi13:01:192:53:366:386:33
6:26
-0:43

Checkpoints & Pacing

📈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

6:20 /mi

Average Pace

6:38 /mi

Slowest Pace

7:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:52

94% of race

Time at Steady Pace

9:44

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:27:5920:166:3120:16
6:31
#3989
10K
6.21 mi10:48:1640:336:3220:17
6:32
#3951
15K
9.32 mi11:08:341:00:516:3220:18
6:32
#3871
20K
12.43 mi11:29:081:21:256:3320:34
6:37
#3829
Half
13.11 mi11:33:321:25:496:334:24
6:27
#3802
25K
15.53 mi11:49:321:41:496:3316:00
6:36
#3718
30K
18.64 mi12:10:272:02:446:3520:55
6:44
#3563
20M
20.00 mi12:19:462:12:036:369:19
6:51
#3493
21M
21.00 mi12:27:022:19:196:387:16
7:16
#3457
35K
21.75 mi12:31:462:24:036:374:44
6:20
#3345
23M
23.00 mi12:40:122:32:296:388:26
6:44
#3217
24M
24.00 mi12:46:422:38:596:376:30
6:30
#3123
40K
24.85 mi12:52:182:44:356:375:36
6:33
#3023
25.2M
25.20 mi12:54:462:47:036:382:28
7:09
#2980
Finish
26.22 mi13:01:192:53:366:386:33
6:26
#2925
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3989376437643762(Top 13%)3548(Top 22%)3548(Top 63%)
10K6.21 mi3.10 mi3951+383735+293735+293918(Top 14%)3689(Top 23%)3689(Top 65%)
15K9.32 mi3.11 mi3871+803653+823653+823762(Top 13%)3548(Top 22%)3548(Top 63%)
20K12.43 mi3.11 mi3829+423609+443609+443813(Top 13%)3595(Top 22%)3595(Top 64%)
Half13.11 mi0.68 mi3802+273587+223587+223330(Top 12%)3156(Top 20%)3156(Top 56%)
25K15.53 mi2.42 mi3718+843510+773510+773438(Top 12%)3243(Top 20%)3243(Top 57%)
30K18.64 mi3.11 mi3563+1553367+1433367+1433031(Top 11%)2848(Top 18%)2848(Top 50%)
20M20.00 mi1.36 mi3493+703300+673300+673216(Top 11%)2972(Top 18%)2972(Top 53%)
21M21.00 mi1.00 mi3457+363265+353265+353433(Top 12%)3145(Top 20%)3145(Top 56%)
35K21.75 mi0.75 mi3345+1123158+1073158+1071728(Top 6%)1622(Top 10%)1622(Top 29%)
23M23.00 mi1.25 mi3217+1283036+1223036+1222405(Top 8%)2232(Top 14%)2232(Top 40%)
24M24.00 mi1.00 mi3123+942948+882948+882043(Top 7%)1896(Top 12%)1896(Top 34%)
40K24.85 mi0.85 mi3023+1002853+952853+951799(Top 6%)1662(Top 10%)1662(Top 29%)
25.2M25.20 mi0.35 mi2980+432813+402813+401953(Top 7%)1766(Top 11%)1766(Top 31%)
Finish26.22 mi1.02 mi2925+552762+512762+512433(Top 9%)2213(Top 14%)2213(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3762

Males

3548

M18-39

3548

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3918

Males

3689

M18-39

3689

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3762

Males

3548

M18-39

3548

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3813

Males

3595

M18-39

3595

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3330

Males

3156

M18-39

3156

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3438

Males

3243

M18-39

3243

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3031

Males

2848

M18-39

2848

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3216

Males

2972

M18-39

2972

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3433

Males

3145

M18-39

3145

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1728

Males

1622

M18-39

1622

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2405

Males

2232

M18-39

2232

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2043

Males

1896

M18-39

1896

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1799

Males

1662

M18-39

1662

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1953

Males

1766

M18-39

1766

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2433

Males

2213

M18-39

2213

Passing Analysis

Category:
Athletes Passed
1477
Passed By
413
Net Change
+1064
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3989
5K → 10K173135+38#3989#3951
10K → 15K13454+80#3951#3871
15K → 20K10967+42#3871#3829
20K → Half303+27#3829#3802
Half → 25K11228+84#3802#3718
25K → 30K19035+155#3718#3563
30K → 20M9727+70#3563#3493
20M → 21M7236+36#3493#3457
21M → 35K1120+112#3457#3345
35K → 23M13911+128#3345#3217
23M → 24M962+94#3217#3123
24M → 40K1011+100#3123#3023
40K → 25.2M452+43#3023#2980
25.2M → Finish6712+55#2980#2925
TOTALS1477413+1064
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing