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BOSTON MARATHON 2025

William O'connor

Bib: 27028•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

Start
0:00:00
Race begins
5K· 3.11 mi
27:49
Rank: #22217
Start → 5K
8:57/mi
27:49 split
10K· 6.21 mi
56:07
Rank: #22543 (-326)
5K → 10K
9:07/mi
28:18 split
15K· 9.32 mi
1:24:23
Rank: #22510 (+33)
10K → 15K
9:06/mi
28:16 split
20K· 12.43 mi
1:54:12
Rank: #22731 (-221)
15K → 20K
9:36/mi
29:49 split
Half· 13.11 mi
2:00:38
Rank: #22782 (-51)
20K → Half
9:26/mi
6:26 split
25K· 15.53 mi
2:25:56
Rank: #23105 (-323)
Half → 25K
10:26/mi
25:18 split
30K· 18.64 mi
2:59:52
Rank: #23243 (-138)
25K → 30K
10:55/mi
33:56 split
20M
3:15:39
Rank: #23375 (-132)
30K → 20M
11:37/mi
15:47 split
21M
3:27:38
Rank: #23397 (-22)
20M → 21M
11:59/mi
11:59 split
35K· 21.75 mi
3:36:14
Rank: #23473 (-76)
21M → 35K
11:30/mi
8:36 split
23M
3:51:05
Rank: #23606 (-133)
35K → 23M
11:52/mi
14:51 split
24M
4:03:08
Rank: #23747 (-141)
23M → 24M
12:03/mi
12:03 split
40K· 24.85 mi
4:13:00
Rank: #23760 (-13)
24M → 40K
11:32/mi
9:52 split
25.2M
4:17:24
Rank: #23775 (-15)
40K → 25.2M
12:46/mi
4:24 split
Finish· 26.22 mi
4:27:44
Rank: #23786 (-11)
25.2M → Finish
10:08/mi
10:20 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:38
Pace9:12 /mi
2nd Half
Distance13.11 mi
Time2:27:06
Pace11:13 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:4127:498:5727:49
8:57
-
10K
6.21 mi12:11:5956:079:0228:18
9:07
+0:10
15K
9.32 mi12:40:151:24:239:0328:16
9:06
-0:01
20K
12.43 mi13:10:041:54:129:1129:49
9:36
+0:30
Half
13.11 mi13:16:302:00:389:126:26
9:26
-0:10
25K
15.53 mi13:41:482:25:569:2425:18
10:26
+1:00
30K
18.64 mi14:15:442:59:529:3933:56
10:55
+0:29
20M
20.00 mi14:31:313:15:399:4715:47
11:37
+0:42
21M
21.00 mi14:43:303:27:389:5311:59
11:59
+0:22
35K
21.75 mi14:52:063:36:149:578:36
11:30
-0:29
23M
23.00 mi15:06:573:51:0510:0314:51
11:52
+0:22
24M
24.00 mi15:19:004:03:0810:0812:03
12:03
+0:11
40K
24.85 mi15:28:524:13:0010:119:52
11:32
-0:31
25.2M
25.20 mi15:33:164:17:2410:134:24
12:46
+1:14
Finish
26.22 mi15:43:364:27:4410:1310:20
10:08
-2:38

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

8:57 /mi

Average Pace

10:13 /mi

Slowest Pace

12:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:58

49% of race

Time at Steady Pace

1:07:50

25% of race

Time at Slower Pace

1:08:56

26% of race

Average Pace: 10:13 /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 mi11:43:4127:498:5727:49
8:57
#22217
10K
6.21 mi12:11:5956:079:0228:18
9:07
#22543
15K
9.32 mi12:40:151:24:239:0328:16
9:06
#22510
20K
12.43 mi13:10:041:54:129:1129:49
9:36
#22731
Half
13.11 mi13:16:302:00:389:126:26
9:26
#22782
25K
15.53 mi13:41:482:25:569:2425:18
10:26
#23105
30K
18.64 mi14:15:442:59:529:3933:56
10:55
#23243
20M
20.00 mi14:31:313:15:399:4715:47
11:37
#23375
21M
21.00 mi14:43:303:27:389:5311:59
11:59
#23397
35K
21.75 mi14:52:063:36:149:578:36
11:30
#23473
23M
23.00 mi15:06:573:51:0510:0314:51
11:52
#23606
24M
24.00 mi15:19:004:03:0810:0812:03
12:03
#23747
40K
24.85 mi15:28:524:13:0010:119:52
11:32
#23760
25.2M
25.20 mi15:33:164:17:2410:134:24
12:46
#23775
Finish
26.22 mi15:43:364:27:4410:1310:20
10:08
#23786
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22217134091340922450(Top 79%)13590(Top 84%)13590(Top 241%)
10K6.21 mi3.10 mi22543-32613569-16013569-16022857(Top 80%)13747(Top 85%)13747(Top 244%)
15K9.32 mi3.11 mi22510+3313587-1813587-1822450(Top 79%)13590(Top 84%)13590(Top 241%)
20K12.43 mi3.11 mi22731-22113701-11413701-11423191(Top 82%)13891(Top 86%)13891(Top 246%)
Half13.11 mi0.68 mi22782-5113721-2013721-2023347(Top 82%)13947(Top 87%)13947(Top 247%)
25K15.53 mi2.42 mi23105-32313845-12413845-12424246(Top 85%)14303(Top 89%)14303(Top 254%)
30K18.64 mi3.11 mi23243-13813865-2013865-2023865(Top 84%)14008(Top 87%)14008(Top 248%)
20M20.00 mi1.36 mi23375-13213910-4513910-4524735(Top 87%)14340(Top 89%)14340(Top 254%)
21M21.00 mi1.00 mi23397-2213894+1613894+1623564(Top 83%)13714(Top 85%)13714(Top 243%)
35K21.75 mi0.75 mi23473-7613913-1913913-1925086(Top 88%)14390(Top 89%)14390(Top 255%)
23M23.00 mi1.25 mi23606-13313962-4913962-4924888(Top 88%)14280(Top 89%)14280(Top 253%)
24M24.00 mi1.00 mi23747-14114010-4814010-4825738(Top 91%)14674(Top 91%)14674(Top 260%)
40K24.85 mi0.85 mi23760-1314000+1014000+1024204(Top 85%)13875(Top 86%)13875(Top 246%)
25.2M25.20 mi0.35 mi23775-1514004-414004-424665(Top 87%)14100(Top 88%)14100(Top 250%)
Finish26.22 mi1.02 mi23786-1113998+613998+623353(Top 82%)13450(Top 84%)13450(Top 238%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22450

Males

13590

M18-39

13590

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22857

Males

13747

M18-39

13747

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22450

Males

13590

M18-39

13590

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23191

Males

13891

M18-39

13891

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

23347

Males

13947

M18-39

13947

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

24246

Males

14303

M18-39

14303

25K→30K

15.5 - 18.6 mi

Top 84%
×9stories
+181ft-148ft

Overall

23865

Males

14008

M18-39

14008

30K→20M

18.6 - 20.0 mi

Top 87%
×5stories
+64ft-50ft

Overall

24735

Males

14340

M18-39

14340

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

23564

Males

13714

M18-39

13714

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

25086

Males

14390

M18-39

14390

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

24888

Males

14280

M18-39

14280

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

25738

Males

14674

M18-39

14674

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24204

Males

13875

M18-39

13875

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24665

Males

14100

M18-39

14100

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

23353

Males

13450

M18-39

13450

Passing Analysis

Category:
Athletes Passed
910
Passed By
2479
Net Change
-1569
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22217
5K → 10K133459-326#22217#22543
10K → 15K195162+33#22543#22510
15K → 20K108329-221#22510#22731
20K → Half1970-51#22731#22782
Half → 25K57380-323#22782#23105
25K → 30K124262-138#23105#23243
30K → 20M46178-132#23243#23375
20M → 21M7294-22#23375#23397
21M → 35K24100-76#23397#23473
35K → 23M36169-133#23473#23606
23M → 24M14155-141#23606#23747
24M → 40K4053-13#23747#23760
40K → 25.2M1025-15#23760#23775
25.2M → Finish3243-11#23775#23786
TOTALS9102479-1569
📊

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