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BOSTON MARATHON 2025

Seth Seppala

Bib: 6711•M

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 37%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:08
Rank: #8834
Start → 5K
22:08 | 7:07/mi
10K· 6.21 mi
43:38
Rank: #8021 (+813)
5K → 10K
21:30 | 6:55/mi
15K· 9.32 mi
1:05:33
Rank: #7989 (+32)
10K → 15K
21:55 | 7:03/mi
20K· 12.43 mi
1:28:06
Rank: #8094 (-105)
15K → 20K
22:33 | 7:15/mi
Half· 13.11 mi
1:32:42
Rank: #7964 (+130)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:49:43
Rank: #7668 (+296)
Half → 25K
17:01 | 7:01/mi
30K· 18.64 mi
2:12:14
Rank: #7304 (+364)
25K → 30K
22:31 | 7:15/mi
20M
2:22:18
Rank: #7163 (+141)
30K → 20M
10:04 | 7:24/mi
21M
2:30:00
Rank: #7011 (+152)
20M → 21M
7:42 | 7:42/mi
35K· 21.75 mi
2:35:17
Rank: #6926 (+85)
21M → 35K
5:17 | 7:04/mi
23M
2:44:39
Rank: #6812 (+114)
35K → 23M
9:22 | 7:29/mi
24M
2:52:05
Rank: #6778 (+34)
23M → 24M
7:26 | 7:26/mi
40K· 24.85 mi
2:58:45
Rank: #6821 (-43)
24M → 40K
6:40 | 7:48/mi
25.2M
3:01:41
Rank: #6823 (-2)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:09:41
Rank: #6964 (-141)
25.2M → Finish
8:00 | 7:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:42
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:36:59
Pace7:24 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:4922:087:0722:08
7:07
-
10K
6.21 mi10:50:1943:387:0121:30
6:55
-0:12
15K
9.32 mi11:12:141:05:337:0221:55
7:03
+0:08
20K
12.43 mi11:34:471:28:067:0522:33
7:15
+0:12
Half
13.11 mi11:39:231:32:427:044:36
6:45
-0:30
25K
15.53 mi11:56:241:49:437:0417:01
7:01
+0:16
30K
18.64 mi12:18:552:12:147:0622:31
7:15
+0:14
20M
20.00 mi12:28:592:22:187:0710:04
7:24
+0:09
21M
21.00 mi12:36:412:30:007:097:42
7:42
+0:18
35K
21.75 mi12:41:582:35:177:085:17
7:04
-0:38
23M
23.00 mi12:51:202:44:397:109:22
7:29
+0:25
24M
24.00 mi12:58:462:52:057:107:26
7:26
-0:03
40K
24.85 mi13:05:262:58:457:126:40
7:48
+0:22
25.2M
25.20 mi13:08:223:01:417:132:56
8:30
+0:42
Finish
26.22 mi13:16:223:09:417:148:00
7:51
-0:39

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

6:45 /mi

Average Pace

7:14 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:07

23% of race

Time at Steady Pace

1:51:54

59% of race

Time at Slower Pace

34:40

18% of race

Average Pace: 7:14 /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 mi10:28:4922:087:0722:08
7:07
#8834
10K
6.21 mi10:50:1943:387:0121:30
6:55
#8021
15K
9.32 mi11:12:141:05:337:0221:55
7:03
#7989
20K
12.43 mi11:34:471:28:067:0522:33
7:15
#8094
Half
13.11 mi11:39:231:32:427:044:36
6:45
#7964
25K
15.53 mi11:56:241:49:437:0417:01
7:01
#7668
30K
18.64 mi12:18:552:12:147:0622:31
7:15
#7304
20M
20.00 mi12:28:592:22:187:0710:04
7:24
#7163
21M
21.00 mi12:36:412:30:007:097:42
7:42
#7011
35K
21.75 mi12:41:582:35:177:085:17
7:04
#6926
23M
23.00 mi12:51:202:44:397:109:22
7:29
#6812
24M
24.00 mi12:58:462:52:057:107:26
7:26
#6778
40K
24.85 mi13:05:262:58:457:126:40
7:48
#6821
25.2M
25.20 mi13:08:223:01:417:132:56
8:30
#6823
Finish
26.22 mi13:16:223:09:417:148:00
7:51
#6964
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi8834751175117981(Top 28%)6927(Top 43%)6927(Top 123%)
10K6.21 mi3.10 mi8021+8136997+5146997+5147380(Top 26%)6557(Top 41%)6557(Top 116%)
15K9.32 mi3.11 mi7989+326970+276970+277981(Top 28%)6927(Top 43%)6927(Top 123%)
20K12.43 mi3.11 mi8094-1057016-467016-468669(Top 31%)7257(Top 45%)7257(Top 129%)
Half13.11 mi0.68 mi7964+1306928+886928+885612(Top 20%)5132(Top 32%)5132(Top 91%)
25K15.53 mi2.42 mi7668+2966718+2106718+2106432(Top 23%)5712(Top 35%)5712(Top 101%)
30K18.64 mi3.11 mi7304+3646425+2936425+2936147(Top 22%)5420(Top 34%)5420(Top 96%)
20M20.00 mi1.36 mi7163+1416296+1296296+1296415(Top 23%)5468(Top 34%)5468(Top 97%)
21M21.00 mi1.00 mi7011+1526161+1356161+1355625(Top 20%)4818(Top 30%)4818(Top 85%)
35K21.75 mi0.75 mi6926+856088+736088+735746(Top 20%)4882(Top 30%)4882(Top 87%)
23M23.00 mi1.25 mi6812+1145966+1225966+1226509(Top 23%)5294(Top 33%)5294(Top 94%)
24M24.00 mi1.00 mi6778+345915+515915+517214(Top 25%)5647(Top 35%)5647(Top 100%)
40K24.85 mi0.85 mi6821-435916-15916-18683(Top 31%)6340(Top 39%)6340(Top 112%)
25.2M25.20 mi0.35 mi6823-25909+75909+78728(Top 31%)6287(Top 39%)6287(Top 111%)
Finish26.22 mi1.02 mi6964-1415970-615970-6111754(Top 41%)7893(Top 49%)7893(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7981

Males

6927

M18-39

6927

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7380

Males

6557

M18-39

6557

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7981

Males

6927

M18-39

6927

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8669

Males

7257

M18-39

7257

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5612

Males

5132

M18-39

5132

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6432

Males

5712

M18-39

5712

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6147

Males

5420

M18-39

5420

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6415

Males

5468

M18-39

5468

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5625

Males

4818

M18-39

4818

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5746

Males

4882

M18-39

4882

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6509

Males

5294

M18-39

5294

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7214

Males

5647

M18-39

5647

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8683

Males

6340

M18-39

6340

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8728

Males

6287

M18-39

6287

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11754

Males

7893

M18-39

7893

Passing Analysis

Category:
Athletes Passed
2708
Passed By
838
Net Change
+1870
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8834
5K → 10K83320+813#8834#8021
10K → 15K156124+32#8021#7989
15K → 20K108213-105#7989#8094
20K → Half1300+130#8094#7964
Half → 25K3048+296#7964#7668
25K → 30K39834+364#7668#7304
30K → 20M16221+141#7304#7163
20M → 21M17018+152#7163#7011
21M → 35K9813+85#7011#6926
35K → 23M14834+114#6926#6812
23M → 24M9157+34#6812#6778
24M → 40K4992-43#6778#6821
40K → 25.2M3537-2#6821#6823
25.2M → Finish26167-141#6823#6964
TOTALS2708838+1870
📊

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