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BOSTON MARATHON 2025

Sébastien David

Bib: 8708•M

QC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 26%
Masters (Masters Men)
#0 / 10463
Top 12%
Division (M40-44)
#0 / 2247
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #4254
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
41:24
Rank: #5026 (-772)
5K → 10K
21:02 | 6:46/mi
15K· 9.32 mi
1:02:36
Rank: #5409 (-383)
10K → 15K
21:12 | 6:49/mi
20K· 12.43 mi
1:23:51
Rank: #5448 (-39)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:28:27
Rank: #5456 (-8)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:44:55
Rank: #5305 (+151)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:06:50
Rank: #5200 (+105)
25K → 30K
21:55 | 7:03/mi
20M
2:16:11
Rank: #5002 (+198)
30K → 20M
9:21 | 6:53/mi
21M
2:23:26
Rank: #4859 (+143)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:28:16
Rank: #4699 (+160)
21M → 35K
4:50 | 6:28/mi
23M
2:36:43
Rank: #4490 (+209)
35K → 23M
8:27 | 6:45/mi
24M
2:43:31
Rank: #4418 (+72)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:49:34
Rank: #4398 (+20)
24M → 40K
6:03 | 7:05/mi
25.2M
2:52:32
Rank: #4500 (-102)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
2:59:41
Rank: #4591 (-91)
25.2M → Finish
7:09 | 7:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:27
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:31:14
Pace6:58 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:3120:226:3320:22
6:33
-
10K
6.21 mi11:06:3341:246:4021:02
6:46
+0:13
15K
9.32 mi11:27:451:02:366:4321:12
6:49
+0:03
20K
12.43 mi11:49:001:23:516:4521:15
6:50
+0:01
Half
13.11 mi11:53:361:28:276:454:36
6:45
-0:05
25K
15.53 mi12:10:041:44:556:4516:28
6:47
+0:02
30K
18.64 mi12:31:592:06:506:4821:55
7:03
+0:16
20M
20.00 mi12:41:202:16:116:499:21
6:53
-0:10
21M
21.00 mi12:48:352:23:266:507:15
7:15
+0:22
35K
21.75 mi12:53:252:28:166:494:50
6:28
-0:47
23M
23.00 mi13:01:522:36:436:498:27
6:45
+0:17
24M
24.00 mi13:08:402:43:316:496:48
6:48
+0:03
40K
24.85 mi13:14:432:49:346:496:03
7:05
+0:17
25.2M
25.20 mi13:17:412:52:326:512:58
8:36
+1:31
Finish
26.22 mi13:24:502:59:416:517:09
7:01
-1:35

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

6:28 /mi

Average Pace

6:51 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:12

14% of race

Time at Steady Pace

2:18:13

77% of race

Time at Slower Pace

16:16

9% of race

Average Pace: 6:51 /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 mi10:45:3120:226:3320:22
6:33
#4254
10K
6.21 mi11:06:3341:246:4021:02
6:46
#5026
15K
9.32 mi11:27:451:02:366:4321:12
6:49
#5409
20K
12.43 mi11:49:001:23:516:4521:15
6:50
#5448
Half
13.11 mi11:53:361:28:276:454:36
6:45
#5456
25K
15.53 mi12:10:041:44:556:4516:28
6:47
#5305
30K
18.64 mi12:31:592:06:506:4821:55
7:03
#5200
20M
20.00 mi12:41:202:16:116:499:21
6:53
#5002
21M
21.00 mi12:48:352:23:266:507:15
7:15
#4859
35K
21.75 mi12:53:252:28:166:494:50
6:28
#4699
23M
23.00 mi13:01:522:36:436:498:27
6:45
#4490
24M
24.00 mi13:08:402:43:316:496:48
6:48
#4418
40K
24.85 mi13:14:432:49:346:496:03
7:05
#4398
25.2M
25.20 mi13:17:412:52:326:512:58
8:36
#4500
Finish
26.22 mi13:24:502:59:416:517:09
7:01
#4591
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4254400340036319(Top 22%)5720(Top 36%)5720(Top 255%)
10K6.21 mi3.10 mi5026-7724685-6824685-6826054(Top 21%)5531(Top 34%)5531(Top 246%)
15K9.32 mi3.11 mi5409-3835006-3215006-3216319(Top 22%)5720(Top 36%)5720(Top 255%)
20K12.43 mi3.11 mi5448-395029-235029-235688(Top 20%)5186(Top 32%)5186(Top 231%)
Half13.11 mi0.68 mi5456-85036-75036-75644(Top 20%)5164(Top 32%)5164(Top 230%)
25K15.53 mi2.42 mi5305+1514896+1404896+1404818(Top 17%)4433(Top 28%)4433(Top 197%)
30K18.64 mi3.11 mi5200+1054785+1114785+1115043(Top 18%)4575(Top 28%)4575(Top 204%)
20M20.00 mi1.36 mi5002+1984608+1774608+1773413(Top 12%)3159(Top 20%)3159(Top 141%)
21M21.00 mi1.00 mi4859+1434482+1264482+1263408(Top 12%)3130(Top 19%)3130(Top 139%)
35K21.75 mi0.75 mi4699+1604340+1424340+1422322(Top 8%)2174(Top 13%)2174(Top 97%)
23M23.00 mi1.25 mi4490+2094149+1914149+1912486(Top 9%)2305(Top 14%)2305(Top 103%)
24M24.00 mi1.00 mi4418+724078+714078+713540(Top 12%)3175(Top 20%)3175(Top 141%)
40K24.85 mi0.85 mi4398+204050+284050+284351(Top 15%)3749(Top 23%)3749(Top 167%)
25.2M25.20 mi0.35 mi4500-1024133-834133-839326(Top 33%)6578(Top 41%)6578(Top 293%)
Finish26.22 mi1.02 mi4591-914209-764209-765828(Top 21%)4625(Top 29%)4625(Top 206%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6319

Males

5720

M40-44

5720

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

6054

Males

5531

M40-44

5531

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6319

Males

5720

M40-44

5720

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5688

Males

5186

M40-44

5186

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5644

Males

5164

M40-44

5164

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4818

Males

4433

M40-44

4433

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5043

Males

4575

M40-44

4575

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3413

Males

3159

M40-44

3159

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3408

Males

3130

M40-44

3130

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2322

Males

2174

M40-44

2174

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2486

Males

2305

M40-44

2305

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3540

Males

3175

M40-44

3175

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4351

Males

3749

M40-44

3749

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9326

Males

6578

M40-44

6578

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5828

Males

4625

M40-44

4625

Passing Analysis

Category:
Athletes Passed
1493
Passed By
1830
Net Change
-337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4254
5K → 10K9781-772#4254#5026
10K → 15K39422-383#5026#5409
15K → 20K110149-39#5409#5448
20K → Half3341-8#5448#5456
Half → 25K18938+151#5456#5305
25K → 30K207102+105#5305#5200
30K → 20M2046+198#5200#5002
20M → 21M15411+143#5002#4859
21M → 35K1600+160#4859#4699
35K → 23M2134+209#4699#4490
23M → 24M9018+72#4490#4418
24M → 40K5434+20#4418#4398
40K → 25.2M7109-102#4398#4500
25.2M → Finish24115-91#4500#4591
TOTALS14931830-337
📊

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