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BOSTON MARATHON 2025

Justin Seymour

Bib: 7544•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
Masters (Masters Men)
#0 / 10463
Top 11%
Division (M45-49)
#0 / 2386
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:47
Rank: #5356
Start → 5K
20:47 | 6:41/mi
10K· 6.21 mi
41:27
Rank: #5109 (+247)
5K → 10K
20:40 | 6:39/mi
15K· 9.32 mi
1:02:07
Rank: #4914 (+195)
10K → 15K
20:40 | 6:39/mi
20K· 12.43 mi
1:22:48
Rank: #4664 (+250)
15K → 20K
20:41 | 6:39/mi
Half· 13.11 mi
1:27:21
Rank: #4670 (-6)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:43:39
Rank: #4563 (+107)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:05:24
Rank: #4546 (+17)
25K → 30K
21:45 | 7:00/mi
20M
2:15:07
Rank: #4568 (-22)
30K → 20M
9:43 | 7:09/mi
21M
2:22:31
Rank: #4503 (+65)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:27:38
Rank: #4467 (+36)
21M → 35K
5:07 | 6:50/mi
23M
2:36:27
Rank: #4401 (+66)
35K → 23M
8:49 | 7:03/mi
24M
2:43:19
Rank: #4348 (+53)
23M → 24M
6:52 | 6:52/mi
40K· 24.85 mi
2:49:18
Rank: #4317 (+31)
24M → 40K
5:59 | 7:00/mi
25.2M
2:51:55
Rank: #4293 (+24)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:58:54
Rank: #4314 (-21)
25.2M → Finish
6:59 | 6:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:21
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:31:33
Pace6:59 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:5920:476:4120:47
6:41
-
10K
6.21 mi10:48:3941:276:4020:40
6:39
-0:02
15K
9.32 mi11:09:191:02:076:4020:40
6:39
0:00
20K
12.43 mi11:30:001:22:486:4020:41
6:39
0:00
Half
13.11 mi11:34:331:27:216:404:33
6:40
+0:01
25K
15.53 mi11:50:511:43:396:4016:18
6:43
+0:03
30K
18.64 mi12:12:362:05:246:4421:45
7:00
+0:17
20M
20.00 mi12:22:192:15:076:459:43
7:09
+0:09
21M
21.00 mi12:29:432:22:316:477:24
7:24
+0:15
35K
21.75 mi12:34:502:27:386:475:07
6:50
-0:34
23M
23.00 mi12:43:392:36:276:488:49
7:03
+0:13
24M
24.00 mi12:50:312:43:196:486:52
6:52
-0:11
40K
24.85 mi12:56:302:49:186:495:59
7:00
+0:08
25.2M
25.20 mi12:59:072:51:556:492:37
7:35
+0:35
Finish
26.22 mi13:06:062:58:546:506:59
6:51
-0:44

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

6:39 /mi

Average Pace

6:50 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:53

94% of race

Time at Steady Pace

10:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:27:5920:476:4120:47
6:41
#5356
10K
6.21 mi10:48:3941:276:4020:40
6:39
#5109
15K
9.32 mi11:09:191:02:076:4020:40
6:39
#4914
20K
12.43 mi11:30:001:22:486:4020:41
6:39
#4664
Half
13.11 mi11:34:331:27:216:404:33
6:40
#4670
25K
15.53 mi11:50:511:43:396:4016:18
6:43
#4563
30K
18.64 mi12:12:362:05:246:4421:45
7:00
#4546
20M
20.00 mi12:22:192:15:076:459:43
7:09
#4568
21M
21.00 mi12:29:432:22:316:477:24
7:24
#4503
35K
21.75 mi12:34:502:27:386:475:07
6:50
#4467
23M
23.00 mi12:43:392:36:276:488:49
7:03
#4401
24M
24.00 mi12:50:312:43:196:486:52
6:52
#4348
40K
24.85 mi12:56:302:49:186:495:59
7:00
#4317
25.2M
25.20 mi12:59:072:51:556:492:37
7:35
#4293
Finish
26.22 mi13:06:062:58:546:506:59
6:51
#4314
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5356498049804670(Top 16%)4371(Top 27%)4371(Top 183%)
10K6.21 mi3.10 mi5109+2474761+2194761+2194899(Top 17%)4575(Top 28%)4575(Top 192%)
15K9.32 mi3.11 mi4914+1954584+1774584+1774670(Top 16%)4371(Top 27%)4371(Top 183%)
20K12.43 mi3.11 mi4664+2504356+2284356+2284079(Top 14%)3829(Top 24%)3829(Top 160%)
Half13.11 mi0.68 mi4670-64363-74363-75021(Top 18%)4650(Top 29%)4650(Top 195%)
25K15.53 mi2.42 mi4563+1074264+994264+994304(Top 15%)3992(Top 25%)3992(Top 167%)
30K18.64 mi3.11 mi4546+174235+294235+294684(Top 16%)4271(Top 27%)4271(Top 179%)
20M20.00 mi1.36 mi4568-224239-44239-44935(Top 17%)4438(Top 28%)4438(Top 186%)
21M21.00 mi1.00 mi4503+654180+594180+594122(Top 15%)3720(Top 23%)3720(Top 156%)
35K21.75 mi0.75 mi4467+364141+394141+394369(Top 15%)3898(Top 24%)3898(Top 163%)
23M23.00 mi1.25 mi4401+664073+684073+684025(Top 14%)3595(Top 22%)3595(Top 151%)
24M24.00 mi1.00 mi4348+534015+584015+583913(Top 14%)3466(Top 22%)3466(Top 145%)
40K24.85 mi0.85 mi4317+313982+333982+333898(Top 14%)3417(Top 21%)3417(Top 143%)
25.2M25.20 mi0.35 mi4293+243957+253957+253841(Top 14%)3323(Top 21%)3323(Top 139%)
Finish26.22 mi1.02 mi4314-213969-123969-124807(Top 17%)3991(Top 25%)3991(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4670

Males

4371

M45-49

4371

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4899

Males

4575

M45-49

4575

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4670

Males

4371

M45-49

4371

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

4079

Males

3829

M45-49

3829

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

5021

Males

4650

M45-49

4650

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4304

Males

3992

M45-49

3992

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4684

Males

4271

M45-49

4271

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4935

Males

4438

M45-49

4438

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4122

Males

3720

M45-49

3720

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4369

Males

3898

M45-49

3898

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

4025

Males

3595

M45-49

3595

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3913

Males

3466

M45-49

3466

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3898

Males

3417

M45-49

3417

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3841

Males

3323

M45-49

3323

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4807

Males

3991

M45-49

3991

Passing Analysis

Category:
Athletes Passed
1696
Passed By
654
Net Change
+1042
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5356
5K → 10K32578+247#5356#5109
10K → 15K23944+195#5109#4914
15K → 20K27020+250#4914#4664
20K → Half1925-6#4664#4670
Half → 25K15548+107#4670#4563
25K → 30K152135+17#4563#4546
30K → 20M6587-22#4546#4568
20M → 21M10641+65#4568#4503
21M → 35K6024+36#4503#4467
35K → 23M9933+66#4467#4401
23M → 24M7623+53#4401#4348
24M → 40K6130+31#4348#4317
40K → 25.2M317+24#4317#4293
25.2M → Finish3859-21#4293#4314
TOTALS1696654+1042
📊

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