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BOSTON MARATHON 2025

Jeffrey Seelaus

Bib: 255•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 1%
Gender (Male)
#0 / 16105
Top 2%
Division (M18-39)
#0 / 5642
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:49
Rank: #480
Start → 5K
17:49 | 5:44/mi
10K· 6.21 mi
35:30
Rank: #455 (+25)
5K → 10K
17:41 | 5:42/mi
15K· 9.32 mi
53:24
Rank: #466 (-11)
10K → 15K
17:54 | 5:46/mi
20K· 12.43 mi
1:11:31
Rank: #467 (-1)
15K → 20K
18:07 | 5:50/mi
Half· 13.11 mi
1:15:27
Rank: #465 (+2)
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:29:30
Rank: #440 (+25)
Half → 25K
14:03 | 5:48/mi
30K· 18.64 mi
1:47:43
Rank: #407 (+33)
25K → 30K
18:13 | 5:52/mi
20M
1:55:50
Rank: #391 (+16)
30K → 20M
8:07 | 5:58/mi
21M
2:01:59
Rank: #370 (+21)
20M → 21M
6:09 | 6:09/mi
35K· 21.75 mi
2:06:13
Rank: #361 (+9)
21M → 35K
4:14 | 5:40/mi
23M
2:13:35
Rank: #336 (+25)
35K → 23M
7:22 | 5:53/mi
24M
2:19:32
Rank: #334 (+2)
23M → 24M
5:57 | 5:57/mi
40K· 24.85 mi
2:24:40
Rank: #324 (+10)
24M → 40K
5:08 | 6:00/mi
25.2M
2:26:51
Rank: #312 (+12)
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:32:27
Rank: #293 (+19)
25.2M → Finish
5:36 | 5:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:27
Pace5:45 /mi
2nd Half
Distance13.11 mi
Time1:17:00
Pace5:52 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:0417:495:4417:49
5:44
-
10K
6.21 mi10:35:4535:305:4317:41
5:42
-0:02
15K
9.32 mi10:53:3953:245:4417:54
5:46
+0:04
20K
12.43 mi11:11:461:11:315:4518:07
5:50
+0:04
Half
13.11 mi11:15:421:15:275:453:56
5:46
-0:04
25K
15.53 mi11:29:451:29:305:4614:03
5:48
+0:02
30K
18.64 mi11:47:581:47:435:4718:13
5:52
+0:04
20M
20.00 mi11:56:051:55:505:478:07
5:58
+0:06
21M
21.00 mi12:02:142:01:595:496:09
6:09
+0:11
35K
21.75 mi12:06:282:06:135:484:14
5:40
-0:29
23M
23.00 mi12:13:502:13:355:487:22
5:53
+0:13
24M
24.00 mi12:19:472:19:325:495:57
5:57
+0:04
40K
24.85 mi12:24:552:24:405:495:08
6:00
+0:03
25.2M
25.20 mi12:27:062:26:515:502:11
6:20
+0:20
Finish
26.22 mi12:32:422:32:275:495:36
5:30
-0:50

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

5:30 /mi

Average Pace

5:49 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:07

95% of race

Time at Steady Pace

8:20

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:49 /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 mi10:18:0417:495:4417:49
5:44
#480
10K
6.21 mi10:35:4535:305:4317:41
5:42
#455
15K
9.32 mi10:53:3953:245:4417:54
5:46
#466
20K
12.43 mi11:11:461:11:315:4518:07
5:50
#467
Half
13.11 mi11:15:421:15:275:453:56
5:46
#465
25K
15.53 mi11:29:451:29:305:4614:03
5:48
#440
30K
18.64 mi11:47:581:47:435:4718:13
5:52
#407
20M
20.00 mi11:56:051:55:505:478:07
5:58
#391
21M
21.00 mi12:02:142:01:595:496:09
6:09
#370
35K
21.75 mi12:06:282:06:135:484:14
5:40
#361
23M
23.00 mi12:13:502:13:355:487:22
5:53
#336
24M
24.00 mi12:19:472:19:325:495:57
5:57
#334
40K
24.85 mi12:24:552:24:405:495:08
6:00
#324
25.2M
25.20 mi12:27:062:26:515:502:11
6:20
#312
Finish
26.22 mi12:32:422:32:275:495:36
5:30
#293
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi480442442465(Top 2%)431(Top 3%)431(Top 8%)
10K6.21 mi3.10 mi455+25418+24418+24428(Top 2%)393(Top 2%)393(Top 7%)
15K9.32 mi3.11 mi466-11429-11429-11465(Top 2%)431(Top 3%)431(Top 8%)
20K12.43 mi3.11 mi467-1431-2431-2477(Top 2%)445(Top 3%)445(Top 8%)
Half13.11 mi0.68 mi465+2429+2429+2497(Top 2%)465(Top 3%)465(Top 8%)
25K15.53 mi2.42 mi440+25405+24405+24404(Top 1%)374(Top 2%)374(Top 7%)
30K18.64 mi3.11 mi407+33374+31374+31310(Top 1%)286(Top 2%)286(Top 5%)
20M20.00 mi1.36 mi391+16359+15359+15343(Top 1%)319(Top 2%)319(Top 6%)
21M21.00 mi1.00 mi370+21340+19340+19223(Top 0.8%)206(Top 1%)206(Top 4%)
35K21.75 mi0.75 mi361+9331+9331+9227(Top 0.8%)207(Top 1%)207(Top 4%)
23M23.00 mi1.25 mi336+25309+22309+22221(Top 0.8%)205(Top 1%)205(Top 4%)
24M24.00 mi1.00 mi334+2307+2307+2478(Top 2%)442(Top 3%)442(Top 8%)
40K24.85 mi0.85 mi324+10297+10297+10388(Top 1%)360(Top 2%)360(Top 6%)
25.2M25.20 mi0.35 mi312+12285+12285+12242(Top 0.9%)223(Top 1%)223(Top 4%)
Finish26.22 mi1.02 mi293+19267+18267+18145(Top 0.5%)139(Top 0.9%)139(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

465

Males

431

M18-39

431

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

428

Males

393

M18-39

393

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

465

Males

431

M18-39

431

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

477

Males

445

M18-39

445

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

497

Males

465

M18-39

465

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

404

Males

374

M18-39

374

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

310

Males

286

M18-39

286

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

343

Males

319

M18-39

319

20M→21M

20.0 - 21.0 mi

Top 0.8%
×8stories
+106ft-24ft

Overall

223

Males

206

M18-39

206

21M→35K

21.0 - 21.8 mi

Top 0.8%
×7stories
+17ft-86ft

Overall

227

Males

207

M18-39

207

35K→23M

21.8 - 23.0 mi

Top 0.8%
×5stories
+23ft-63ft

Overall

221

Males

205

M18-39

205

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

478

Males

442

M18-39

442

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

388

Males

360

M18-39

360

40K→25.2M

24.9 - 25.2 mi

Top 0.9%
×1story
+13ft-16ft

Overall

242

Males

223

M18-39

223

25.2M→Finish

25.2 - 26.2 mi

Top 0.5%
×2stories
+22ft-21ft

Overall

145

Males

139

M18-39

139

Passing Analysis

Category:
Athletes Passed
284
Passed By
97
Net Change
+187
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#480
5K → 10K4015+25#480#455
10K → 15K1627-11#455#466
15K → 20K2021-1#466#467
20K → Half64+2#467#465
Half → 25K283+25#465#440
25K → 30K396+33#440#407
30K → 20M193+16#407#391
20M → 21M210+21#391#370
21M → 35K101+9#370#361
35K → 23M283+25#361#336
23M → 24M119+2#336#334
24M → 40K144+10#334#324
40K → 25.2M120+12#324#312
25.2M → Finish201+19#312#293
TOTALS28497+187
📊

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