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BOSTON MARATHON 2025

Yiming Chen

Bib: 31112•M

MO

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

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
9:18/mi
28:54
↑ 97↓ 3451.5%
10K· 6.21 mi
9:03/mi
57:01
↑ 79↓ 1380.4%
15K· 9.32 mi
9:05/mi
1:25:13
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:54:00
↑ 106↓ 860.1%
Half· 13.11 mi
9:11/mi
2:00:16
↑ 19↓ 370.5%
25K· 15.53 mi
9:45/mi
2:23:55
↑ 66↓ 880.2%
30K· 18.64 mi
10:52/mi
2:57:40
↑ 181↓ 1480.2%
20M
11:02/mi
3:12:39
↑ 64↓ 500.2%
21M
12:43/mi
3:25:22
↑ 106↓ 241.6%
35K· 21.75 mi
11:23/mi
3:33:53
↑ 17↓ 861.7%
23M
11:53/mi
3:48:46
↑ 23↓ 630.6%
24M
12:52/mi
4:01:38
↓ 821.3%
40K· 24.85 mi
13:26/mi
4:13:07
↓ 200.3%
25.2M
15:25/mi
4:18:26
↑ 13↓ 160.2%
Finish· 26.22 mi
11:50/mi
4:30:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:16
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:30:14
Pace11:28 /mi
📊Positive Split: 24.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3428:549:1828:54
9:18
-
10K
6.21 mi12:18:4157:019:1128:07
9:03
-0:15
15K
9.32 mi12:46:531:25:139:0928:12
9:05
+0:02
20K
12.43 mi13:15:401:54:009:1028:47
9:16
+0:11
Half
13.11 mi13:21:562:00:169:106:16
9:11
-0:05
25K
15.53 mi13:45:352:23:559:1623:39
9:45
+0:34
30K
18.64 mi14:19:202:57:409:3233:45
10:52
+1:07
20M
20.00 mi14:34:193:12:399:3814:59
11:02
+0:10
21M
21.00 mi14:47:023:25:229:4712:43
12:43
+1:41
35K
21.75 mi14:55:333:33:539:508:31
11:23
-1:20
23M
23.00 mi15:10:263:48:469:5714:53
11:53
+0:30
24M
24.00 mi15:23:184:01:3810:0412:52
12:52
+0:59
40K
24.85 mi15:34:474:13:0710:1111:29
13:26
+0:34
25.2M
25.20 mi15:40:064:18:2610:155:19
15:25
+1:59
Finish
26.22 mi15:52:104:30:3010:1912:04
11:50
-3:35

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

9:03 /mi

Average Pace

10:19 /mi

Slowest Pace

15:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:55

53% of race

Time at Steady Pace

1:24:12

31% of race

Time at Slower Pace

42:23

16% of race

Average Pace: 10:19 /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 mi11:50:3428:549:1828:54
9:18
#23559
10K
6.21 mi12:18:4157:019:1128:07
9:03
#23121
15K
9.32 mi12:46:531:25:139:0928:12
9:05
#22885
20K
12.43 mi13:15:401:54:009:1028:47
9:16
#22669
Half
13.11 mi13:21:562:00:169:106:16
9:11
#22661
25K
15.53 mi13:45:352:23:559:1623:39
9:45
#22671
30K
18.64 mi14:19:202:57:409:3233:45
10:52
#22891
20M
20.00 mi14:34:193:12:399:3814:59
11:02
#22941
21M
21.00 mi14:47:023:25:229:4712:43
12:43
#23092
35K
21.75 mi14:55:333:33:539:508:31
11:23
#23175
23M
23.00 mi15:10:263:48:469:5714:53
11:53
#23322
24M
24.00 mi15:23:184:01:3810:0412:52
12:52
#23576
40K
24.85 mi15:34:474:13:0710:1111:29
13:26
#23772
25.2M
25.20 mi15:40:064:18:2610:155:19
15:25
#23896
Finish
26.22 mi15:52:104:30:3010:1912:04
11:50
#24074
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23559140311403122356(Top 79%)13541(Top 84%)13541(Top 240%)
10K6.21 mi3.10 mi23121+43813842+18913842+18922607(Top 80%)13623(Top 85%)13623(Top 241%)
15K9.32 mi3.11 mi22885+23613762+8013762+8022356(Top 79%)13541(Top 84%)13541(Top 240%)
20K12.43 mi3.11 mi22669+21613671+9113671+9122158(Top 78%)13431(Top 83%)13431(Top 238%)
Half13.11 mi0.68 mi22661+813664+713664+722534(Top 79%)13580(Top 84%)13580(Top 241%)
25K15.53 mi2.42 mi22671-1013651+1313651+1322651(Top 80%)13583(Top 84%)13583(Top 241%)
30K18.64 mi3.11 mi22891-22013709-5813709-5823736(Top 84%)13953(Top 87%)13953(Top 247%)
20M20.00 mi1.36 mi22941-5013703+613703+623638(Top 83%)13818(Top 86%)13818(Top 245%)
21M21.00 mi1.00 mi23092-15113759-5613759-5624695(Top 87%)14232(Top 88%)14232(Top 252%)
35K21.75 mi0.75 mi23175-8313789-3013789-3024905(Top 88%)14307(Top 89%)14307(Top 254%)
23M23.00 mi1.25 mi23322-14713829-4013829-4024942(Top 88%)14307(Top 89%)14307(Top 254%)
24M24.00 mi1.00 mi23576-25413926-9713926-9726700(Top 94%)15151(Top 94%)15151(Top 269%)
40K24.85 mi0.85 mi23772-19614005-7914005-7926707(Top 94%)15135(Top 94%)15135(Top 268%)
25.2M25.20 mi0.35 mi23896-12414063-5814063-5827399(Top 96%)15481(Top 96%)15481(Top 274%)
Finish26.22 mi1.02 mi24074-17814136-7314136-7326604(Top 94%)15099(Top 94%)15099(Top 268%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22356

Males

13541

M18-39

13541

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

22607

Males

13623

M18-39

13623

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22356

Males

13541

M18-39

13541

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22158

Males

13431

M18-39

13431

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22534

Males

13580

M18-39

13580

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22651

Males

13583

M18-39

13583

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

23736

Males

13953

M18-39

13953

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23638

Males

13818

M18-39

13818

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24695

Males

14232

M18-39

14232

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

24905

Males

14307

M18-39

14307

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

24942

Males

14307

M18-39

14307

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26700

Males

15151

M18-39

15151

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26707

Males

15135

M18-39

15135

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27399

Males

15481

M18-39

15481

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26604

Males

15099

M18-39

15099

Passing Analysis

Category:
Athletes Passed
1555
Passed By
2070
Net Change
-515
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23559
5K → 10K51173+438#23559#23121
10K → 15K29660+236#23121#22885
15K → 20K29882+216#22885#22669
20K → Half4032+8#22669#22661
Half → 25K143153-10#22661#22671
25K → 30K96316-220#22671#22891
30K → 20M63113-50#22891#22941
20M → 21M31182-151#22941#23092
21M → 35K20103-83#23092#23175
35K → 23M28175-147#23175#23322
23M → 24M12266-254#23322#23576
24M → 40K7203-196#23576#23772
40K → 25.2M1125-124#23772#23896
25.2M → Finish9187-178#23896#24074
TOTALS15552070-515
📊

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