Boston Marathon logo
BOSTON MARATHON 2025

Seth O'Hearn

Bib: 30978•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
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
30:30
Rank: #25128
Start → 5K
30:30 | 9:49/mi
10K· 6.21 mi
59:33
Rank: #24409 (+719)
5K → 10K
29:03 | 9:21/mi
15K· 9.32 mi
1:26:20
Rank: #23319 (+1090)
10K → 15K
26:47 | 8:37/mi
20K· 12.43 mi
1:53:52
Rank: #22636 (+683)
15K → 20K
27:32 | 8:52/mi
Half· 13.11 mi
1:59:42
Rank: #22485 (+151)
20K → Half
5:50 | 8:33/mi
25K· 15.53 mi
2:23:04
Rank: #22471 (+14)
Half → 25K
23:22 | 9:38/mi
30K· 18.64 mi
2:57:08
Rank: #22809 (-338)
25K → 30K
34:04 | 10:58/mi
20M
3:14:03
Rank: #23160 (-351)
30K → 20M
16:55 | 12:27/mi
21M
3:27:58
Rank: #23449 (-289)
20M → 21M
13:55 | 13:55/mi
35K· 21.75 mi
3:39:14
Rank: #23866 (-417)
21M → 35K
11:16 | 15:04/mi
23M
3:54:02
Rank: #23934 (-68)
35K → 23M
14:48 | 11:49/mi
24M
4:05:28
Rank: #23987 (-53)
23M → 24M
11:26 | 11:26/mi
40K· 24.85 mi
4:16:32
Rank: #24137 (-150)
24M → 40K
11:04 | 12:57/mi
25.2M
4:22:08
Rank: #24258 (-121)
40K → 25.2M
5:36 | 16:14/mi
Finish· 26.22 mi
4:32:12
Rank: #24206 (+52)
25.2M → Finish
10:04 | 9:53/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:42
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:32:30
Pace11:38 /mi
📊Positive Split: 27.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5130:309:4930:30
9:49
-
10K
6.21 mi12:20:5459:339:3529:03
9:21
-0:28
15K
9.32 mi12:47:411:26:209:1626:47
8:37
-0:44
20K
12.43 mi13:15:131:53:529:1027:32
8:52
+0:15
Half
13.11 mi13:21:031:59:429:085:50
8:33
-0:19
25K
15.53 mi13:44:252:23:049:1323:22
9:38
+1:05
30K
18.64 mi14:18:292:57:089:3034:04
10:58
+1:20
20M
20.00 mi14:35:243:14:039:4216:55
12:27
+1:29
21M
21.00 mi14:49:193:27:589:5413:55
13:55
+1:28
35K
21.75 mi15:00:353:39:1410:0511:16
15:04
+1:09
23M
23.00 mi15:15:233:54:0210:1114:48
11:49
-3:15
24M
24.00 mi15:26:494:05:2810:1411:26
11:26
-0:23
40K
24.85 mi15:37:534:16:3210:1911:04
12:57
+1:31
25.2M
25.20 mi15:43:294:22:0810:245:36
16:14
+3:17
Finish
26.22 mi15:53:334:32:1210:2310:04
9:53
-6:21

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

8:33 /mi

Average Pace

10:23 /mi

Slowest Pace

16:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:34

41% of race

Time at Steady Pace

1:40:52

37% of race

Time at Slower Pace

58:46

22% of race

Average Pace: 10:23 /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 mi11:51:5130:309:4930:30
9:49
#25128
10K
6.21 mi12:20:5459:339:3529:03
9:21
#24409
15K
9.32 mi12:47:411:26:209:1626:47
8:37
#23319
20K
12.43 mi13:15:131:53:529:1027:32
8:52
#22636
Half
13.11 mi13:21:031:59:429:085:50
8:33
#22485
25K
15.53 mi13:44:252:23:049:1323:22
9:38
#22471
30K
18.64 mi14:18:292:57:089:3034:04
10:58
#22809
20M
20.00 mi14:35:243:14:039:4216:55
12:27
#23160
21M
21.00 mi14:49:193:27:589:5413:55
13:55
#23449
35K
21.75 mi15:00:353:39:1410:0511:16
15:04
#23866
23M
23.00 mi15:15:233:54:0210:1114:48
11:49
#23934
24M
24.00 mi15:26:494:05:2810:1411:26
11:26
#23987
40K
24.85 mi15:37:534:16:3210:1911:04
12:57
#24137
25.2M
25.20 mi15:43:294:22:0810:245:36
16:14
#24258
Finish
26.22 mi15:53:334:32:1210:2310:04
9:53
#24206
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25128147871478720041(Top 71%)12527(Top 78%)12527(Top 222%)
10K6.21 mi3.10 mi24409+71914446+34114446+34123682(Top 83%)14110(Top 88%)14110(Top 250%)
15K9.32 mi3.11 mi23319+109013956+49013956+49020041(Top 71%)12527(Top 78%)12527(Top 222%)
20K12.43 mi3.11 mi22636+68313650+30613650+30620280(Top 71%)12591(Top 78%)12591(Top 223%)
Half13.11 mi0.68 mi22485+15113568+8213568+8219522(Top 69%)12286(Top 76%)12286(Top 218%)
25K15.53 mi2.42 mi22471+1413558+1013558+1022308(Top 79%)13432(Top 83%)13432(Top 238%)
30K18.64 mi3.11 mi22809-33813676-11813676-11823948(Top 84%)14046(Top 87%)14046(Top 249%)
20M20.00 mi1.36 mi23160-35113808-13213808-13225845(Top 91%)14853(Top 92%)14853(Top 263%)
21M21.00 mi1.00 mi23449-28913914-10613914-10626143(Top 92%)14954(Top 93%)14954(Top 265%)
35K21.75 mi0.75 mi23866-41714098-18414098-18428078(Top 99%)15900(Top 99%)15900(Top 282%)
23M23.00 mi1.25 mi23934-6814106-814106-824808(Top 87%)14244(Top 88%)14244(Top 252%)
24M24.00 mi1.00 mi23987-5314127-2114127-2124777(Top 87%)14188(Top 88%)14188(Top 251%)
40K24.85 mi0.85 mi24137-15014175-4814175-4826237(Top 92%)14907(Top 93%)14907(Top 264%)
25.2M25.20 mi0.35 mi24258-12114238-6314238-6327819(Top 98%)15717(Top 98%)15717(Top 279%)
Finish26.22 mi1.02 mi24206+5214200+3814200+3822558(Top 79%)13062(Top 81%)13062(Top 232%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

20041

Males

12527

M18-39

12527

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

23682

Males

14110

M18-39

14110

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

20041

Males

12527

M18-39

12527

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20280

Males

12591

M18-39

12591

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

19522

Males

12286

M18-39

12286

Half→25K

13.1 - 15.5 mi

Top 79%
×4stories
+66ft-88ft

Overall

22308

Males

13432

M18-39

13432

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

23948

Males

14046

M18-39

14046

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

25845

Males

14853

M18-39

14853

20M→21M

20.0 - 21.0 mi

Top 92%
×8stories
+106ft-24ft

Overall

26143

Males

14954

M18-39

14954

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

28078

Males

15900

M18-39

15900

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

24808

Males

14244

M18-39

14244

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

24777

Males

14188

M18-39

14188

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26237

Males

14907

M18-39

14907

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27819

Males

15717

M18-39

15717

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

22558

Males

13062

M18-39

13062

Passing Analysis

Category:
Athletes Passed
3091
Passed By
2169
Net Change
+922
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25128
5K → 10K73718+719#25128#24409
10K → 15K10922+1090#24409#23319
15K → 20K6841+683#23319#22636
20K → Half1521+151#22636#22485
Half → 25K155141+14#22485#22471
25K → 30K81419-338#22471#22809
30K → 20M22373-351#22809#23160
20M → 21M18307-289#23160#23449
21M → 35K5422-417#23449#23866
35K → 23M42110-68#23866#23934
23M → 24M3184-53#23934#23987
24M → 40K8158-150#23987#24137
40K → 25.2M2123-121#24137#24258
25.2M → Finish6210+52#24258#24206
TOTALS30912169+922
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing