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BOSTON MARATHON 2026

Yi-Yuan Chou

Bib: 17281β€’M

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0:00
0:00
/ mi
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
51Β°/41Β°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
28:38
3.11 mi
Rank: #23511
Start β†’ 5K
28:38 | 9:13/mi
10K
59:22
6.21 mi
Rank: #24681 (-1170)
5K β†’ 10K
30:44 | 9:54/mi
15K
1:31:54
9.32 mi
Rank: #25485 (-804)
10K β†’ 15K
32:32 | 10:29/mi
20K
2:13:46
12.43 mi
Rank: #27162 (-1677)
15K β†’ 20K
41:52 | 13:29/mi
HALF
2:21:28
13.11 mi
Rank: #27193 (-31)
20K β†’ HALF
7:42 | 11:18/mi
25K
2:56:28
15.53 mi
Rank: #27763 (-570)
HALF β†’ 25K
35:00 | 14:26/mi
30K
3:36:54
18.64 mi
Rank: #27795 (-32)
25K β†’ 30K
40:26 | 13:01/mi
20M
3:54:29
20.00 mi
Rank: #27778 (+17)
30K β†’ 20M
17:35 | 12:57/mi
21M
4:10:24
21.00 mi
Rank: #27846 (-68)
20M β†’ 21M
15:55 | 15:55/mi
35K
4:21:24
21.75 mi
Rank: #27897 (-51)
21M β†’ 35K
11:00 | 14:43/mi
23M
4:38:35
23.00 mi
Rank: #27907 (-10)
35K β†’ 23M
17:11 | 13:44/mi
24M
4:49:59
24.00 mi
Rank: #27855 (+52)
23M β†’ 24M
11:24 | 11:24/mi
40K
5:00:25
24.85 mi
Rank: #27823 (+32)
24M β†’ 40K
10:26 | 12:13/mi
25.2M
5:06:32
25.20 mi
Rank: #27858 (-35)
40K β†’ 25.2M
6:07 | 17:45/mi
FINISH
5:17:52
26.22 mi
Rank: #27818 (+40)
25.2M β†’ FINISH
11:20 | 11:08/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:21:28
Pace10:48 /mi
2nd Half
Distance13.11 mi
Time2:56:24
Pace13:28 /mi
πŸ“ŠPositive Split: 24.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:10:2028:389:1328:38
9:13
-
10K
6.21 mi11:41:0459:229:3430:44
9:54
+0:41
15K
9.32 mi12:13:361:31:549:5232:32
10:29
+0:35
20K
12.43 mi12:55:282:13:4610:4641:52
13:29
+3:00
HALF
13.11 mi13:03:102:21:2810:487:42
11:18
-2:11
25K
15.53 mi13:38:102:56:2811:2235:00
14:26
+3:08
30K
18.64 mi14:18:363:36:5411:3940:26
13:01
-1:25
20M
20.00 mi14:36:113:54:2911:4417:35
12:57
-0:04
21M
21.00 mi14:52:064:10:2411:5615:55
15:55
+2:58
35K
21.75 mi15:03:064:21:2412:0211:00
14:43
-1:12
23M
23.00 mi15:20:174:38:3512:0717:11
13:44
-0:59
24M
24.00 mi15:31:414:49:5912:0511:24
11:24
-2:20
40K
24.85 mi15:42:075:00:2512:0610:26
12:13
+0:49
25.2M
25.20 mi15:48:145:06:3212:106:07
17:45
+5:32
FINISH
26.22 mi15:59:345:17:5212:0811:20
11:08
-6:37

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

9:13 /mi

Average Pace

12:08 /mi

Slowest Pace

17:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

2:02:20

38% of race

Time at Steady Pace

2:07:30

40% of race

Time at Slower Pace

1:08:02

21% of race

Average Pace: 12:07 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:10:2028:389:1328:38
9:13
#23511
10K
6.21 mi11:41:0459:229:3430:44
9:54
#24681
15K
9.32 mi12:13:361:31:549:5232:32
10:29
#25485
20K
12.43 mi12:55:282:13:4610:4641:52
13:29
#27162
HALF
13.11 mi13:03:102:21:2810:487:42
11:18
#27193
25K
15.53 mi13:38:102:56:2811:2235:00
14:26
#27763
30K
18.64 mi14:18:363:36:5411:3940:26
13:01
#27795
20M
20.00 mi14:36:113:54:2911:4417:35
12:57
#27778
21M
21.00 mi14:52:064:10:2411:5615:55
15:55
#27846
35K
21.75 mi15:03:064:21:2412:0211:00
14:43
#27897
23M
23.00 mi15:20:174:38:3512:0717:11
13:44
#27907
24M
24.00 mi15:31:414:49:5912:0511:24
11:24
#27855
40K
24.85 mi15:42:075:00:2512:0610:26
12:13
#27823
25.2M
25.20 mi15:48:145:06:3212:106:07
17:45
#27858
FINISH
26.22 mi15:59:345:17:5212:0811:20
11:08
#27818
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 mi23511139861398626627(Top 92%)15439(Top 94%)15439(Top 1035%)
10K6.21 mi3.10 mi24681-117014568-58214568-58225582(Top 88%)14994(Top 92%)14994(Top 1006%)
15K9.32 mi3.11 mi25485-80414945-37714945-37726627(Top 92%)15439(Top 94%)15439(Top 1035%)
20K12.43 mi3.11 mi27162-167715675-73015675-73028790(Top 99%)16250(Top 99%)16250(Top 1090%)
HALF13.11 mi0.68 mi27193-3115682-715682-727675(Top 95%)15825(Top 97%)15825(Top 1061%)
25K15.53 mi2.42 mi27763-57015902-22015902-22028817(Top 99%)16257(Top 99%)16257(Top 1090%)
30K18.64 mi3.11 mi27795-3215889+1315889+1327724(Top 96%)15779(Top 97%)15779(Top 1058%)
20M20.00 mi1.36 mi27778+1715877+1215877+1227368(Top 94%)15587(Top 95%)15587(Top 1045%)
21M21.00 mi1.00 mi27846-6815899-2215899-2228544(Top 98%)16092(Top 98%)16092(Top 1079%)
35K21.75 mi0.75 mi27897-5115928-2915928-2928622(Top 99%)16108(Top 99%)16108(Top 1080%)
23M23.00 mi1.25 mi27907-1015925+315925+327955(Top 96%)15803(Top 97%)15803(Top 1060%)
24M24.00 mi1.00 mi27855+5215890+3515890+3525803(Top 89%)14713(Top 90%)14713(Top 987%)
40K24.85 mi0.85 mi27823+3215869+2115869+2126170(Top 90%)14845(Top 91%)14845(Top 996%)
25.2M25.20 mi0.35 mi27858-3515883-1415883-1428836(Top 99%)16213(Top 99%)16213(Top 1087%)
FINISH26.22 mi1.02 mi27818+4015856+2715856+2726303(Top 91%)14912(Top 91%)14912(Top 1000%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
Γ—21
+97ft-345ft

Overall

26627

Males

15439

M55-59

15439

5K→10K

3.1 - 6.2 mi

Top 88%
Γ—5
+79ft-138ft

Overall

25582

Males

14994

M55-59

14994

10K→15K

6.2 - 9.3 mi

Top 92%
Γ—3
+67ft-78ft

Overall

26627

Males

15439

M55-59

15439

15K→20K

9.3 - 12.4 mi

Top 99%
Γ—5
+106ft-86ft

Overall

28790

Males

16250

M55-59

16250

20K→HALF

12.4 - 13.1 mi

Top 95%
Γ—2
+19ft-37ft

Overall

27675

Males

15825

M55-59

15825

HALF→25K

13.1 - 15.5 mi

Top 99%
Γ—4
+66ft-88ft

Overall

28817

Males

16257

M55-59

16257

25K→30K

15.5 - 18.6 mi

Top 96%
Γ—9
+181ft-148ft

Overall

27724

Males

15779

M55-59

15779

30K→20M

18.6 - 20.0 mi

Top 94%
Γ—5
+64ft-50ft

Overall

27368

Males

15587

M55-59

15587

20M→21M

20.0 - 21.0 mi

Top 98%
Γ—8
+106ft-24ft

Overall

28544

Males

16092

M55-59

16092

21M→35K

21.0 - 21.8 mi

Top 99%
Γ—7
+17ft-86ft

Overall

28622

Males

16108

M55-59

16108

35K→23M

21.8 - 23.0 mi

Top 96%
Γ—5
+23ft-63ft

Overall

27955

Males

15803

M55-59

15803

23M→24M

23.0 - 24.0 mi

Top 89%
Γ—6
+12ft-82ft

Overall

25803

Males

14713

M55-59

14713

24M→40K

24.0 - 24.9 mi

Top 90%
Γ—1
+6ft-20ft

Overall

26170

Males

14845

M55-59

14845

40K→25.2M

24.9 - 25.2 mi

Top 99%
Γ—1
+13ft-16ft

Overall

28836

Males

16213

M55-59

16213

25.2M→FINISH

25.2 - 26.2 mi

Top 91%
Γ—2
+22ft-21ft

Overall

26303

Males

14912

M55-59

14912

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
310
Passed By
4617
Net Change
-4307
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#23511
5K β†’ 10K181188-1170#23511#24681
10K β†’ 15K8812-804#24681#25485
15K β†’ 20K11678-1677#25485#27162
20K β†’ HALF1546-31#27162#27193
HALF β†’ 25K5575-570#27193#27763
25K β†’ 30K6496-32#27763#27795
30K β†’ 20M3619+17#27795#27778
20M β†’ 21M1078-68#27778#27846
21M β†’ 35K455-51#27846#27897
35K β†’ 23M1626-10#27897#27907
23M β†’ 24M531+52#27907#27855
24M β†’ 40K353+32#27855#27823
40K β†’ 25.2M338-35#27823#27858
25.2M β†’ FINISH422+40#27858#27818
TOTALS3104617-4307
πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing