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BOSTON MARATHON 2026

Tom O'Brien

Bib: 28157•M

FL

Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
26:07
Rank: #19534
Start → 5K
26:07 | 8:25/mi
10K· 6.21 mi
53:19
Rank: #20627 (-1093)
5K → 10K
27:12 | 8:46/mi
15K· 9.32 mi
1:20:33
Rank: #20963 (-336)
10K → 15K
27:14 | 8:46/mi
20K· 12.43 mi
1:47:44
Rank: #20878 (+85)
15K → 20K
27:11 | 8:45/mi
HALF· 13.11 mi
1:53:37
Rank: #20883 (-5)
20K → HALF
5:53 | 8:38/mi
25K· 15.53 mi
2:14:55
Rank: #20759 (+124)
HALF → 25K
21:18 | 8:47/mi
30K· 18.64 mi
2:42:49
Rank: #20527 (+232)
25K → 30K
27:54 | 8:59/mi
20M
2:55:01
Rank: #20374 (+153)
30K → 20M
12:12 | 8:59/mi
21M
3:04:38
Rank: #20296 (+78)
20M → 21M
9:37 | 9:37/mi
35K· 21.75 mi
3:11:17
Rank: #20285 (+11)
21M → 35K
6:39 | 8:54/mi
23M
3:23:00
Rank: #20276 (+9)
35K → 23M
11:43 | 9:22/mi
24M
3:33:45
Rank: #20566 (-290)
23M → 24M
10:45 | 10:45/mi
40K· 24.85 mi
3:42:31
Rank: #20692 (-126)
24M → 40K
8:46 | 10:16/mi
25.2M
3:46:16
Rank: #20724 (-32)
40K → 25.2M
3:45 | 10:53/mi
FINISH· 26.22 mi
3:56:34
Rank: #20957 (-233)
25.2M → FINISH
10:18 | 10:07/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:53:37
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:02:57
Pace9:23 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4926:078:2526:07
8:25
-
10K
6.21 mi12:15:0153:198:3527:12
8:46
+0:21
15K
9.32 mi12:42:151:20:338:3927:14
8:46
0:00
20K
12.43 mi13:09:261:47:448:4127:11
8:45
-0:01
HALF
13.11 mi13:15:191:53:378:415:53
8:38
-0:07
25K
15.53 mi13:36:372:14:558:4221:18
8:47
+0:09
30K
18.64 mi14:04:312:42:498:4527:54
8:59
+0:12
20M
20.00 mi14:16:432:55:018:4612:12
8:59
0:00
21M
21.00 mi14:26:203:04:388:489:37
9:37
+0:38
35K
21.75 mi14:32:593:11:178:486:39
8:54
-0:43
23M
23.00 mi14:44:423:23:008:5011:43
9:22
+0:28
24M
24.00 mi14:55:273:33:458:5510:45
10:45
+1:23
40K
24.85 mi15:04:133:42:318:588:46
10:16
-0:29
25.2M
25.20 mi15:07:583:46:168:593:45
10:53
+0:37
FINISH
26.22 mi15:18:163:56:349:0210:18
10:07
-0:46

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:25 /mi

Average Pace

9:02 /mi

Slowest Pace

10:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

26:07

11% of race

Time at Steady Pace

2:47:16

71% of race

Time at Slower Pace

43:11

18% of race

Average Pace: 9:01 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:47:4926:078:2526:07
8:25
#19534
10K
6.21 mi12:15:0153:198:3527:12
8:46
#20627
15K
9.32 mi12:42:151:20:338:3927:14
8:46
#20963
20K
12.43 mi13:09:261:47:448:4127:11
8:45
#20878
HALF
13.11 mi13:15:191:53:378:415:53
8:38
#20883
25K
15.53 mi13:36:372:14:558:4221:18
8:47
#20759
30K
18.64 mi14:04:312:42:498:4527:54
8:59
#20527
20M
20.00 mi14:16:432:55:018:4612:12
8:59
#20374
21M
21.00 mi14:26:203:04:388:489:37
9:37
#20296
35K
21.75 mi14:32:593:11:178:486:39
8:54
#20285
23M
23.00 mi14:44:423:23:008:5011:43
9:22
#20276
24M
24.00 mi14:55:273:33:458:5510:45
10:45
#20566
40K
24.85 mi15:04:133:42:318:588:46
10:16
#20692
25.2M
25.20 mi15:07:583:46:168:593:45
10:53
#20724
FINISH
26.22 mi15:18:163:56:349:0210:18
10:07
#20957
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19534120711207121561(Top 74%)13057(Top 80%)13057(Top 876%)
10K6.21 mi3.10 mi20627-109312583-51212583-51221683(Top 75%)13101(Top 80%)13101(Top 879%)
15K9.32 mi3.11 mi20963-33612754-17112754-17121561(Top 74%)13057(Top 80%)13057(Top 876%)
20K12.43 mi3.11 mi20878+8512705+4912705+4920698(Top 71%)12623(Top 77%)12623(Top 847%)
HALF13.11 mi0.68 mi20883-512698+712698+720968(Top 72%)12782(Top 78%)12782(Top 857%)
25K15.53 mi2.42 mi20759+12412635+6312635+6320156(Top 69%)12334(Top 75%)12334(Top 827%)
30K18.64 mi3.11 mi20527+23212503+13212503+13219485(Top 67%)11934(Top 73%)11934(Top 800%)
20M20.00 mi1.36 mi20374+15312426+7712426+7718859(Top 65%)11576(Top 71%)11576(Top 776%)
21M21.00 mi1.00 mi20296+7812372+5412372+5419037(Top 66%)11628(Top 71%)11628(Top 780%)
35K21.75 mi0.75 mi20285+1112361+1112361+1119562(Top 67%)11768(Top 72%)11768(Top 789%)
23M23.00 mi1.25 mi20276+912349+1212349+1220082(Top 69%)11993(Top 73%)11993(Top 804%)
24M24.00 mi1.00 mi20566-29012466-11712466-11724609(Top 85%)14119(Top 86%)14119(Top 947%)
40K24.85 mi0.85 mi20692-12612523-5712523-5722568(Top 78%)13099(Top 80%)13099(Top 879%)
25.2M25.20 mi0.35 mi20724-3212535-1212535-1222035(Top 76%)12855(Top 79%)12855(Top 862%)
FINISH26.22 mi1.02 mi20957-23312637-10212637-10224116(Top 83%)13849(Top 85%)13849(Top 929%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

21561

Males

13057

M55-59

13057

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21683

Males

13101

M55-59

13101

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

21561

Males

13057

M55-59

13057

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20698

Males

12623

M55-59

12623

20K→HALF

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

20968

Males

12782

M55-59

12782

HALF→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

20156

Males

12334

M55-59

12334

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

19485

Males

11934

M55-59

11934

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18859

Males

11576

M55-59

11576

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

19037

Males

11628

M55-59

11628

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19562

Males

11768

M55-59

11768

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

20082

Males

11993

M55-59

11993

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

24609

Males

14119

M55-59

14119

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22568

Males

13099

M55-59

13099

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

22035

Males

12855

M55-59

12855

25.2M→FINISH

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

24116

Males

13849

M55-59

13849

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1307
Passed By
2730
Net Change
-1423
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19534
5K → 10K431136-1093#19534#20627
10K → 15K84420-336#20627#20963
15K → 20K213128+85#20963#20878
20K → HALF2934-5#20878#20883
HALF → 25K17450+124#20883#20759
25K → 30K29159+232#20759#20527
30K → 20M17219+153#20527#20374
20M → 21M11840+78#20374#20296
21M → 35K5039+11#20296#20285
35K → 23M7364+9#20285#20276
23M → 24M14304-290#20276#20566
24M → 40K29155-126#20566#20692
40K → 25.2M941-32#20692#20724
25.2M → FINISH8241-233#20724#20957
TOTALS13072730-1423
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing