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BOSTON MARATHON 2025

Robert O'Day

Bib: 26112•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:45
Rank: #18633
Start → 5K
8:17/mi
25:45 split
10K· 6.21 mi
52:33
Rank: #19571 (-938)
5K → 10K
8:38/mi
26:48 split
15K· 9.32 mi
1:20:39
Rank: #20499 (-928)
10K → 15K
9:03/mi
28:06 split
20K· 12.43 mi
1:50:09
Rank: #21235 (-736)
15K → 20K
9:30/mi
29:30 split
Half· 13.11 mi
1:56:26
Rank: #21340 (-105)
20K → Half
9:13/mi
6:17 split
25K· 15.53 mi
2:20:54
Rank: #21895 (-555)
Half → 25K
10:05/mi
24:28 split
30K· 18.64 mi
2:52:38
Rank: #22021 (-126)
25K → 30K
10:13/mi
31:44 split
20M
3:06:33
Rank: #21982 (+39)
30K → 20M
10:14/mi
13:55 split
21M
3:18:18
Rank: #22058 (-76)
20M → 21M
11:45/mi
11:45 split
35K· 21.75 mi
3:25:44
Rank: #22038 (+20)
21M → 35K
9:56/mi
7:26 split
23M
3:38:33
Rank: #21960 (+78)
35K → 23M
10:14/mi
12:49 split
24M
3:48:26
Rank: #21911 (+49)
23M → 24M
9:53/mi
9:53 split
40K· 24.85 mi
3:56:59
Rank: #21855 (+56)
24M → 40K
10:00/mi
8:33 split
25.2M
4:00:41
Rank: #21816 (+39)
40K → 25.2M
10:44/mi
3:42 split
Finish· 26.22 mi
4:09:56
Rank: #21728 (+88)
25.2M → Finish
9:05/mi
9:15 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:26
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time2:13:30
Pace10:11 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:5825:458:1725:45
8:17
-
10K
6.21 mi12:07:4652:338:2726:48
8:38
+0:21
15K
9.32 mi12:35:521:20:398:3928:06
9:03
+0:25
20K
12.43 mi13:05:221:50:098:5229:30
9:30
+0:27
Half
13.11 mi13:11:391:56:268:536:17
9:13
-0:17
25K
15.53 mi13:36:072:20:549:0424:28
10:05
+0:52
30K
18.64 mi14:07:512:52:389:1631:44
10:13
+0:08
20M
20.00 mi14:21:463:06:339:2013:55
10:14
+0:01
21M
21.00 mi14:33:313:18:189:2711:45
11:45
+1:31
35K
21.75 mi14:40:573:25:449:287:26
9:56
-1:49
23M
23.00 mi14:53:463:38:339:3012:49
10:14
+0:18
24M
24.00 mi15:03:393:48:269:319:53
9:53
-0:21
40K
24.85 mi15:12:123:56:599:328:33
10:00
+0:07
25.2M
25.20 mi15:15:544:00:419:333:42
10:44
+0:44
Finish
26.22 mi15:25:094:09:569:329:15
9:05
-1:39

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

8:17 /mi

Average Pace

9:32 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:41

50% of race

Time at Steady Pace

1:48:48

44% of race

Time at Slower Pace

15:27

6% of race

Average Pace: 9:32 /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 mi11:40:5825:458:1725:45
8:17
#18633
10K
6.21 mi12:07:4652:338:2726:48
8:38
#19571
15K
9.32 mi12:35:521:20:398:3928:06
9:03
#20499
20K
12.43 mi13:05:221:50:098:5229:30
9:30
#21235
Half
13.11 mi13:11:391:56:268:536:17
9:13
#21340
25K
15.53 mi13:36:072:20:549:0424:28
10:05
#21895
30K
18.64 mi14:07:512:52:389:1631:44
10:13
#22021
20M
20.00 mi14:21:463:06:339:2013:55
10:14
#21982
21M
21.00 mi14:33:313:18:189:2711:45
11:45
#22058
35K
21.75 mi14:40:573:25:449:287:26
9:56
#22038
23M
23.00 mi14:53:463:38:339:3012:49
10:14
#21960
24M
24.00 mi15:03:393:48:269:319:53
9:53
#21911
40K
24.85 mi15:12:123:56:599:328:33
10:00
#21855
25.2M
25.20 mi15:15:544:00:419:333:42
10:44
#21816
Finish
26.22 mi15:25:094:09:569:329:15
9:05
#21728
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi18633118801188022226(Top 78%)13487(Top 84%)13487(Top 600%)
10K6.21 mi3.10 mi19571-93812291-41112291-41120475(Top 72%)12691(Top 79%)12691(Top 565%)
15K9.32 mi3.11 mi20499-92812691-40012691-40022226(Top 78%)13487(Top 84%)13487(Top 600%)
20K12.43 mi3.11 mi21235-73613013-32213013-32222877(Top 81%)13734(Top 85%)13734(Top 611%)
Half13.11 mi0.68 mi21340-10513054-4113054-4122596(Top 80%)13599(Top 84%)13599(Top 605%)
25K15.53 mi2.42 mi21895-55513285-23113285-23123477(Top 83%)13946(Top 87%)13946(Top 621%)
30K18.64 mi3.11 mi22021-12613325-4013325-4022218(Top 78%)13275(Top 82%)13275(Top 591%)
20M20.00 mi1.36 mi21982+3913297+2813297+2821679(Top 76%)12897(Top 80%)12897(Top 574%)
21M21.00 mi1.00 mi22058-7613302-513302-523118(Top 81%)13509(Top 84%)13509(Top 601%)
35K21.75 mi0.75 mi22038+2013281+2113281+2121711(Top 76%)12775(Top 79%)12775(Top 569%)
23M23.00 mi1.25 mi21960+7813210+7113210+7121238(Top 75%)12509(Top 78%)12509(Top 557%)
24M24.00 mi1.00 mi21911+4913163+4713163+4720999(Top 74%)12349(Top 77%)12349(Top 550%)
40K24.85 mi0.85 mi21855+5613117+4613117+4620461(Top 72%)12026(Top 75%)12026(Top 535%)
25.2M25.20 mi0.35 mi21816+3913094+2313094+2319808(Top 70%)11706(Top 73%)11706(Top 521%)
Finish26.22 mi1.02 mi21728+8813038+5613038+5619408(Top 68%)11542(Top 72%)11542(Top 514%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22226

Males

13487

M40-44

13487

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20475

Males

12691

M40-44

12691

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22226

Males

13487

M40-44

13487

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

22877

Males

13734

M40-44

13734

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22596

Males

13599

M40-44

13599

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23477

Males

13946

M40-44

13946

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22218

Males

13275

M40-44

13275

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21679

Males

12897

M40-44

12897

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

23118

Males

13509

M40-44

13509

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21711

Males

12775

M40-44

12775

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21238

Males

12509

M40-44

12509

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

20999

Males

12349

M40-44

12349

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20461

Males

12026

M40-44

12026

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19808

Males

11706

M40-44

11706

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19408

Males

11542

M40-44

11542

Passing Analysis

Category:
Athletes Passed
976
Passed By
4071
Net Change
-3095
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18633
5K → 10K56994-938#18633#19571
10K → 15K43971-928#19571#20499
15K → 20K53789-736#20499#21235
20K → Half7112-105#21235#21340
Half → 25K36591-555#21340#21895
25K → 30K144270-126#21895#22021
30K → 20M10566+39#22021#21982
20M → 21M57133-76#21982#22058
21M → 35K5535+20#22058#22038
35K → 23M12244+78#22038#21960
23M → 24M7829+49#21960#21911
24M → 40K7822+56#21911#21855
40K → 25.2M423+39#21855#21816
25.2M → Finish10012+88#21816#21728
TOTALS9764071-3095
📊

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