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BOSTON MARATHON 2025

Conor O'Shea

Bib: 27109•M

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:43/mi
27:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
53:54
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:20:13
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:46:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:51:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:46/mi
2:13:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:41/mi
2:40:11
↑ 181↓ 1480.2%
20M
8:48/mi
2:52:09
↑ 64↓ 500.2%
21M
8:25/mi
3:00:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
3:06:31
↑ 17↓ 861.7%
23M
7:55/mi
3:16:26
↑ 23↓ 630.6%
24M
7:53/mi
3:24:19
↓ 821.3%
40K· 24.85 mi
7:53/mi
3:31:03
↓ 200.3%
25.2M
8:07/mi
3:33:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:21/mi
3:41:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:51:56
Pace8:32 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:49:24
Pace8:21 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5327:068:4327:06
8:43
-
10K
6.21 mi12:16:4153:548:4026:48
8:38
-0:05
15K
9.32 mi12:43:001:20:138:3626:19
8:28
-0:10
20K
12.43 mi13:09:121:46:258:3426:12
8:26
-0:02
Half
13.11 mi13:14:431:51:568:325:31
8:05
-0:21
25K
15.53 mi13:35:592:13:128:3421:16
8:46
+0:41
30K
18.64 mi14:02:582:40:118:3626:59
8:41
-0:05
20M
20.00 mi14:14:562:52:098:3611:58
8:48
+0:07
21M
21.00 mi14:23:213:00:348:368:25
8:25
-0:23
35K
21.75 mi14:29:183:06:318:355:57
7:57
-0:28
23M
23.00 mi14:39:133:16:268:329:55
7:55
-0:02
24M
24.00 mi14:47:063:24:198:317:53
7:53
-0:02
40K
24.85 mi14:53:503:31:038:296:44
7:53
0:00
25.2M
25.20 mi14:56:383:33:518:292:48
8:07
+0:14
Finish
26.22 mi15:04:073:41:208:277:29
7:21
-0:46

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

7:21 /mi

Average Pace

8:27 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:29

20% of race

Time at Steady Pace

1:30:32

41% of race

Time at Slower Pace

1:27:19

39% of race

Average Pace: 8:26 /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 mi11:49:5327:068:4327:06
8:43
#21100
10K
6.21 mi12:16:4153:548:4026:48
8:38
#20762
15K
9.32 mi12:43:001:20:138:3626:19
8:28
#20241
20K
12.43 mi13:09:121:46:258:3426:12
8:26
#19667
Half
13.11 mi13:14:431:51:568:325:31
8:05
#19505
25K
15.53 mi13:35:592:13:128:3421:16
8:46
#19356
30K
18.64 mi14:02:582:40:118:3626:59
8:41
#18706
20M
20.00 mi14:14:562:52:098:3611:58
8:48
#18474
21M
21.00 mi14:23:213:00:348:368:25
8:25
#18004
35K
21.75 mi14:29:183:06:318:355:57
7:57
#17769
23M
23.00 mi14:39:133:16:268:329:55
7:55
#17286
24M
24.00 mi14:47:063:24:198:317:53
7:53
#16973
40K
24.85 mi14:53:503:31:038:296:44
7:53
#16679
25.2M
25.20 mi14:56:383:33:518:292:48
8:07
#16516
Finish
26.22 mi15:04:073:41:208:277:29
7:21
#16213
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21100129051290519143(Top 67%)12111(Top 75%)12111(Top 215%)
10K6.21 mi3.10 mi20762+33812785+12012785+12020467(Top 72%)12683(Top 79%)12683(Top 225%)
15K9.32 mi3.11 mi20241+52112577+20812577+20819143(Top 67%)12111(Top 75%)12111(Top 215%)
20K12.43 mi3.11 mi19667+57412327+25012327+25017743(Top 62%)11500(Top 71%)11500(Top 204%)
Half13.11 mi0.68 mi19505+16212252+7512252+7516492(Top 58%)10971(Top 68%)10971(Top 194%)
25K15.53 mi2.42 mi19356+14912180+7212180+7218772(Top 66%)11864(Top 74%)11864(Top 210%)
30K18.64 mi3.11 mi18706+65011880+30011880+30015903(Top 56%)10455(Top 65%)10455(Top 185%)
20M20.00 mi1.36 mi18474+23211740+14011740+14015681(Top 55%)10233(Top 64%)10233(Top 181%)
21M21.00 mi1.00 mi18004+47011517+22311517+2239961(Top 35%)7351(Top 46%)7351(Top 130%)
35K21.75 mi0.75 mi17769+23511400+11711400+11711940(Top 42%)8310(Top 52%)8310(Top 147%)
23M23.00 mi1.25 mi17286+48311132+26811132+2689443(Top 33%)6953(Top 43%)6953(Top 123%)
24M24.00 mi1.00 mi16973+31310988+14410988+14410439(Top 37%)7406(Top 46%)7406(Top 131%)
40K24.85 mi0.85 mi16679+29410833+15510833+1559305(Top 33%)6698(Top 42%)6698(Top 119%)
25.2M25.20 mi0.35 mi16516+16310764+6910764+696621(Top 23%)5150(Top 32%)5150(Top 91%)
Finish26.22 mi1.02 mi16213+30310622+14210622+1428080(Top 28%)5965(Top 37%)5965(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

19143

Males

12111

M18-39

12111

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20467

Males

12683

M18-39

12683

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

19143

Males

12111

M18-39

12111

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17743

Males

11500

M18-39

11500

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16492

Males

10971

M18-39

10971

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18772

Males

11864

M18-39

11864

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15903

Males

10455

M18-39

10455

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15681

Males

10233

M18-39

10233

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9961

Males

7351

M18-39

7351

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11940

Males

8310

M18-39

8310

35K→23M

21.8 - 23.0 mi

Top 33%
×5story building
+23ft-63ft

Overall

9443

Males

6953

M18-39

6953

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

10439

Males

7406

M18-39

7406

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9305

Males

6698

M18-39

6698

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6621

Males

5150

M18-39

5150

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

8080

Males

5965

M18-39

5965

Passing Analysis

Category:
Athletes Passed
5209
Passed By
322
Net Change
+4887
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21100
5K → 10K497159+338#21100#20762
10K → 15K55231+521#20762#20241
15K → 20K58511+574#20241#19667
20K → Half1653+162#19667#19505
Half → 25K23990+149#19505#19356
25K → 30K6599+650#19356#18706
30K → 20M24412+232#18706#18474
20M → 21M4700+470#18474#18004
21M → 35K2350+235#18004#17769
35K → 23M4841+483#17769#17286
23M → 24M3141+313#17286#16973
24M → 40K2962+294#16973#16679
40K → 25.2M1630+163#16679#16516
25.2M → Finish3063+303#16516#16213
TOTALS5209322+4887
📊

Passing Visuals

Category:
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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