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BOSTON MARATHON 2025

Chi Ming Ma

Bib: 28990•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
10:08/mi
31:30
↑ 97↓ 3451.5%
10K· 6.21 mi
10:08/mi
1:03:00
↑ 79↓ 1380.4%
15K· 9.32 mi
10:13/mi
1:34:45
↑ 67↓ 78
20K· 12.43 mi
10:13/mi
2:06:28
↑ 106↓ 860.1%
Half· 13.11 mi
10:08/mi
2:13:23
↑ 19↓ 370.5%
25K· 15.53 mi
10:30/mi
2:38:51
↑ 66↓ 880.2%
30K· 18.64 mi
11:14/mi
3:13:46
↑ 181↓ 1480.2%
20M
13:04/mi
3:31:32
↑ 64↓ 500.2%
21M
12:10/mi
3:43:42
↑ 106↓ 241.6%
35K· 21.75 mi
11:52/mi
3:52:35
↑ 17↓ 861.7%
23M
11:38/mi
4:07:09
↑ 23↓ 630.6%
24M
11:10/mi
4:18:19
↓ 821.3%
40K· 24.85 mi
10:37/mi
4:27:24
↓ 200.3%
25.2M
12:31/mi
4:31:43
↑ 13↓ 160.2%
Finish· 26.22 mi
10:12/mi
4:42:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:23
Pace10:10 /mi
2nd Half
Distance13.11 mi
Time2:28:44
Pace11:21 /mi
📊Positive Split: 11.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5831:3010:0831:30
10:08
-
10K
6.21 mi12:21:281:03:0010:0831:30
10:08
0:00
15K
9.32 mi12:53:131:34:4510:1031:45
10:13
+0:05
20K
12.43 mi13:24:562:06:2810:1131:43
10:13
0:00
Half
13.11 mi13:31:512:13:2310:106:55
10:08
-0:05
25K
15.53 mi13:57:192:38:5110:1425:28
10:30
+0:22
30K
18.64 mi14:32:143:13:4610:2434:55
11:14
+0:44
20M
20.00 mi14:50:003:31:3210:3517:46
13:04
+1:50
21M
21.00 mi15:02:103:43:4210:3912:10
12:10
-0:54
35K
21.75 mi15:11:033:52:3510:428:53
11:52
-0:18
23M
23.00 mi15:25:374:07:0910:4514:34
11:38
-0:14
24M
24.00 mi15:36:474:18:1910:4611:10
11:10
-0:28
40K
24.85 mi15:45:524:27:2410:469:05
10:37
-0:33
25.2M
25.20 mi15:50:114:31:4310:474:19
12:31
+1:54
Finish
26.22 mi16:00:354:42:0710:4610:24
10:12
-2:19

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

10:08 /mi

Average Pace

10:46 /mi

Slowest Pace

13:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:55

25% of race

Time at Steady Pace

1:48:25

38% of race

Time at Slower Pace

1:43:47

37% of race

Average Pace: 10:46 /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 mi11:49:5831:3010:0831:30
10:08
#25926
10K
6.21 mi12:21:281:03:0010:0831:30
10:08
#25740
15K
9.32 mi12:53:131:34:4510:1031:45
10:13
#25651
20K
12.43 mi13:24:562:06:2810:1131:43
10:13
#25388
Half
13.11 mi13:31:512:13:2310:106:55
10:08
#25363
25K
15.53 mi13:57:192:38:5110:1425:28
10:30
#25176
30K
18.64 mi14:32:143:13:4610:2434:55
11:14
#25039
20M
20.00 mi14:50:003:31:3210:3517:46
13:04
#25212
21M
21.00 mi15:02:103:43:4210:3912:10
12:10
#25154
35K
21.75 mi15:11:033:52:3510:428:53
11:52
#25176
23M
23.00 mi15:25:374:07:0910:4514:34
11:38
#25143
24M
24.00 mi15:36:474:18:1910:4611:10
11:10
#25108
40K
24.85 mi15:45:524:27:2410:469:05
10:37
#25036
25.2M
25.20 mi15:50:114:31:4310:474:19
12:31
#25023
Finish
26.22 mi16:00:354:42:0710:4610:24
10:12
#25001
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi25926151391513925452(Top 90%)14908(Top 93%)14908(Top 747%)
10K6.21 mi3.10 mi25740+18615050+8915050+8925598(Top 90%)14955(Top 93%)14955(Top 749%)
15K9.32 mi3.11 mi25651+8914997+5314997+5325452(Top 90%)14908(Top 93%)14908(Top 747%)
20K12.43 mi3.11 mi25388+26314872+12514872+12524663(Top 87%)14518(Top 90%)14518(Top 727%)
Half13.11 mi0.68 mi25363+2514860+1214860+1225114(Top 88%)14723(Top 91%)14723(Top 738%)
25K15.53 mi2.42 mi25176+18714760+10014760+10024384(Top 86%)14371(Top 89%)14371(Top 720%)
30K18.64 mi3.11 mi25039+13714678+8214678+8224452(Top 86%)14287(Top 89%)14287(Top 716%)
20M20.00 mi1.36 mi25212-17314732-5414732-5426523(Top 93%)15153(Top 94%)15153(Top 759%)
21M21.00 mi1.00 mi25154+5814694+3814694+3823872(Top 84%)13856(Top 86%)13856(Top 694%)
35K21.75 mi0.75 mi25176-2214696-214696-225673(Top 90%)14671(Top 91%)14671(Top 735%)
23M23.00 mi1.25 mi25143+3314669+2714669+2724480(Top 86%)14084(Top 87%)14084(Top 706%)
24M24.00 mi1.00 mi25108+3514645+2414645+2424325(Top 86%)13983(Top 87%)13983(Top 701%)
40K24.85 mi0.85 mi25036+7214599+4614599+4622253(Top 78%)12863(Top 80%)12863(Top 644%)
25.2M25.20 mi0.35 mi25023+1314592+714592+724228(Top 85%)13891(Top 86%)13891(Top 696%)
Finish26.22 mi1.02 mi25001+2214578+1414578+1423541(Top 83%)13539(Top 84%)13539(Top 678%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25452

Males

14908

M50-54

14908

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

25598

Males

14955

M50-54

14955

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25452

Males

14908

M50-54

14908

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

24663

Males

14518

M50-54

14518

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

25114

Males

14723

M50-54

14723

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24384

Males

14371

M50-54

14371

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24452

Males

14287

M50-54

14287

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

26523

Males

15153

M50-54

15153

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23872

Males

13856

M50-54

13856

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25673

Males

14671

M50-54

14671

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24480

Males

14084

M50-54

14084

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

24325

Males

13983

M50-54

13983

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22253

Males

12863

M50-54

12863

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24228

Males

13891

M50-54

13891

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23541

Males

13539

M50-54

13539

Passing Analysis

Category:
Athletes Passed
1555
Passed By
630
Net Change
+925
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25926
5K → 10K297111+186#25926#25740
10K → 15K17687+89#25740#25651
15K → 20K27916+263#25651#25388
20K → Half3611+25#25388#25363
Half → 25K21124+187#25363#25176
25K → 30K19457+137#25176#25039
30K → 20M17190-173#25039#25212
20M → 21M8325+58#25212#25154
21M → 35K1133-22#25154#25176
35K → 23M5825+33#25176#25143
23M → 24M5621+35#25143#25108
24M → 40K808+72#25108#25036
40K → 25.2M2310+13#25036#25023
25.2M → Finish3412+22#25023#25001
TOTALS1555630+925
📊

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