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BOSTON MARATHON 2025

Chin Meng Tsui

Bib: 31900•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
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
9:38/mi
29:55
↑ 97↓ 3451.5%
10K· 6.21 mi
9:18/mi
58:48
↑ 79↓ 1380.4%
15K· 9.32 mi
10:12/mi
1:30:29
↑ 67↓ 78
20K· 12.43 mi
10:41/mi
2:03:40
↑ 106↓ 860.1%
Half· 13.11 mi
11:27/mi
2:11:29
↑ 19↓ 370.5%
25K· 15.53 mi
11:41/mi
2:39:48
↑ 66↓ 880.2%
30K· 18.64 mi
13:27/mi
3:21:34
↑ 181↓ 1480.2%
20M
13:20/mi
3:39:41
↑ 64↓ 500.2%
21M
15:21/mi
3:55:02
↑ 106↓ 241.6%
35K· 21.75 mi
14:30/mi
4:05:53
↑ 17↓ 861.7%
23M
14:52/mi
4:24:30
↑ 23↓ 630.6%
24M
14:12/mi
4:38:42
↓ 821.3%
40K· 24.85 mi
15:33/mi
4:52:00
↓ 200.3%
25.2M
16:20/mi
4:57:38
↑ 13↓ 160.2%
Finish· 26.22 mi
13:51/mi
5:11:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:29
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time3:00:16
Pace13:45 /mi
📊Positive Split: 37.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:4629:559:3829:55
9:38
-
10K
6.21 mi12:23:3958:489:2828:53
9:18
-0:20
15K
9.32 mi12:55:201:30:299:4231:41
10:12
+0:54
20K
12.43 mi13:28:312:03:409:5733:11
10:41
+0:29
Half
13.11 mi13:36:202:11:2910:027:49
11:27
+0:46
25K
15.53 mi14:04:392:39:4810:1728:19
11:41
+0:14
30K
18.64 mi14:46:253:21:3410:4941:46
13:27
+1:46
20M
20.00 mi15:04:323:39:4110:5918:07
13:20
-0:07
21M
21.00 mi15:19:533:55:0211:1215:21
15:21
+2:01
35K
21.75 mi15:30:444:05:5311:1810:51
14:30
-0:51
23M
23.00 mi15:49:214:24:3011:3018:37
14:52
+0:22
24M
24.00 mi16:03:334:38:4211:3714:12
14:12
-0:40
40K
24.85 mi16:16:514:52:0011:4513:18
15:33
+1:21
25.2M
25.20 mi16:22:294:57:3811:495:38
16:20
+0:47
Finish
26.22 mi16:36:365:11:4511:5414:07
13:51
-2:29

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

9:18 /mi

Average Pace

11:54 /mi

Slowest Pace

16:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:48

51% of race

Time at Steady Pace

1:39:03

32% of race

Time at Slower Pace

52:54

17% of race

Average Pace: 11:53 /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 mi11:54:4629:559:3829:55
9:38
#24627
10K
6.21 mi12:23:3958:489:2828:53
9:18
#24084
15K
9.32 mi12:55:201:30:299:4231:41
10:12
#24598
20K
12.43 mi13:28:312:03:409:5733:11
10:41
#24889
Half
13.11 mi13:36:202:11:2910:027:49
11:27
#25075
25K
15.53 mi14:04:392:39:4810:1728:19
11:41
#25285
30K
18.64 mi14:46:253:21:3410:4941:46
13:27
#25776
20M
20.00 mi15:04:323:39:4110:5918:07
13:20
#25888
21M
21.00 mi15:19:533:55:0211:1215:21
15:21
#26023
35K
21.75 mi15:30:444:05:5311:1810:51
14:30
#26164
23M
23.00 mi15:49:214:24:3011:3018:37
14:52
#26342
24M
24.00 mi16:03:334:38:4211:3714:12
14:12
#26447
40K
24.85 mi16:16:514:52:0011:4513:18
15:33
#26584
25.2M
25.20 mi16:22:294:57:3811:495:38
16:20
#26619
Finish
26.22 mi16:36:365:11:4511:5414:07
13:51
#26726
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi24627145401454025409(Top 89%)14887(Top 92%)14887(Top 903%)
10K6.21 mi3.10 mi24084+54314293+24714293+24723520(Top 83%)14036(Top 87%)14036(Top 852%)
15K9.32 mi3.11 mi24598-51414524-23114524-23125409(Top 89%)14887(Top 92%)14887(Top 903%)
20K12.43 mi3.11 mi24889-29114652-12814652-12825502(Top 90%)14903(Top 93%)14903(Top 904%)
Half13.11 mi0.68 mi25075-18614734-8214734-8227023(Top 95%)15523(Top 96%)15523(Top 942%)
25K15.53 mi2.42 mi25285-21014809-7514809-7526075(Top 92%)15106(Top 94%)15106(Top 917%)
30K18.64 mi3.11 mi25776-49115003-19415003-19427104(Top 95%)15481(Top 96%)15481(Top 939%)
20M20.00 mi1.36 mi25888-11215048-4515048-4526751(Top 94%)15254(Top 95%)15254(Top 926%)
21M21.00 mi1.00 mi26023-13515096-4815096-4827418(Top 97%)15568(Top 97%)15568(Top 945%)
35K21.75 mi0.75 mi26164-14115151-5515151-5527921(Top 98%)15800(Top 98%)15800(Top 959%)
23M23.00 mi1.25 mi26342-17815217-6615217-6627860(Top 98%)15764(Top 98%)15764(Top 957%)
24M24.00 mi1.00 mi26447-10515261-4415261-4427748(Top 98%)15672(Top 97%)15672(Top 951%)
40K24.85 mi0.85 mi26584-13715308-4715308-4727972(Top 98%)15817(Top 98%)15817(Top 960%)
25.2M25.20 mi0.35 mi26619-3515321-1315321-1327847(Top 98%)15731(Top 98%)15731(Top 955%)
Finish26.22 mi1.02 mi26726-10715357-3615357-3627990(Top 99%)15833(Top 98%)15833(Top 961%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

25409

Males

14887

M55-59

14887

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

23520

Males

14036

M55-59

14036

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

25409

Males

14887

M55-59

14887

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

25502

Males

14903

M55-59

14903

20K→Half

12.4 - 13.1 mi

Top 95%
×2story building
+19ft-37ft

Overall

27023

Males

15523

M55-59

15523

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

26075

Males

15106

M55-59

15106

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

27104

Males

15481

M55-59

15481

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

26751

Males

15254

M55-59

15254

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

27418

Males

15568

M55-59

15568

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

27921

Males

15800

M55-59

15800

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

27860

Males

15764

M55-59

15764

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

27748

Males

15672

M55-59

15672

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

27972

Males

15817

M55-59

15817

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27847

Males

15731

M55-59

15731

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

27990

Males

15833

M55-59

15833

Passing Analysis

Category:
Athletes Passed
807
Passed By
2906
Net Change
-2099
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24627
5K → 10K58441+543#24627#24084
10K → 15K32546-514#24084#24598
15K → 20K54345-291#24598#24889
20K → Half6192-186#24889#25075
Half → 25K49259-210#25075#25285
25K → 30K22513-491#25285#25776
30K → 20M24136-112#25776#25888
20M → 21M12147-135#25888#26023
21M → 35K6147-141#26023#26164
35K → 23M5183-178#26164#26342
23M → 24M8113-105#26342#26447
24M → 40K0137-137#26447#26584
40K → 25.2M338-35#26584#26619
25.2M → Finish2109-107#26619#26726
TOTALS8072906-2099
📊

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