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BOSTON MARATHON 2025

Kuowei Mu

Bib: 9837•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:05
Rank: #11607
Start → 5K
23:05 | 7:26/mi
10K· 6.21 mi
45:49
Rank: #10983 (+624)
5K → 10K
22:44 | 7:19/mi
15K· 9.32 mi
1:08:30
Rank: #10631 (+352)
10K → 15K
22:41 | 7:18/mi
20K· 12.43 mi
1:31:15
Rank: #10238 (+393)
15K → 20K
22:45 | 7:19/mi
Half· 13.11 mi
1:36:11
Rank: #10191 (+47)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:54:03
Rank: #9921 (+270)
Half → 25K
17:52 | 7:22/mi
30K· 18.64 mi
2:17:27
Rank: #9471 (+450)
25K → 30K
23:24 | 7:32/mi
20M
2:27:52
Rank: #9327 (+144)
30K → 20M
10:25 | 7:40/mi
21M
2:36:02
Rank: #9232 (+95)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:41:50
Rank: #9250 (-18)
21M → 35K
5:48 | 7:45/mi
23M
2:52:36
Rank: #9529 (-279)
35K → 23M
10:46 | 8:36/mi
24M
3:01:53
Rank: #10044 (-515)
23M → 24M
9:17 | 9:17/mi
40K· 24.85 mi
3:10:06
Rank: #10469 (-425)
24M → 40K
8:13 | 9:37/mi
25.2M
3:13:40
Rank: #10613 (-144)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
3:22:20
Rank: #10840 (-227)
25.2M → Finish
8:40 | 8:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:11
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:46:09
Pace8:06 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2023:057:2623:05
7:26
-
10K
6.21 mi11:12:0445:497:2222:44
7:19
-0:07
15K
9.32 mi11:34:451:08:307:2122:41
7:18
-0:01
20K
12.43 mi11:57:301:31:157:2122:45
7:19
+0:01
Half
13.11 mi12:02:261:36:117:204:56
7:14
-0:05
25K
15.53 mi12:20:181:54:037:2117:52
7:22
+0:08
30K
18.64 mi12:43:422:17:277:2223:24
7:32
+0:10
20M
20.00 mi12:54:072:27:527:2410:25
7:40
+0:08
21M
21.00 mi13:02:172:36:027:268:10
8:10
+0:30
35K
21.75 mi13:08:052:41:507:265:48
7:45
-0:25
23M
23.00 mi13:18:512:52:367:3010:46
8:36
+0:51
24M
24.00 mi13:28:083:01:537:359:17
9:17
+0:41
40K
24.85 mi13:36:213:10:067:398:13
9:37
+0:20
25.2M
25.20 mi13:39:553:13:407:413:34
10:21
+0:44
Finish
26.22 mi13:48:353:22:207:438:40
8:30
-1:51

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

7:14 /mi

Average Pace

7:43 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:33:40

76% of race

Time at Slower Pace

48:40

24% of race

Average Pace: 7:43 /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 mi10:49:2023:057:2623:05
7:26
#11607
10K
6.21 mi11:12:0445:497:2222:44
7:19
#10983
15K
9.32 mi11:34:451:08:307:2122:41
7:18
#10631
20K
12.43 mi11:57:301:31:157:2122:45
7:19
#10238
Half
13.11 mi12:02:261:36:117:204:56
7:14
#10191
25K
15.53 mi12:20:181:54:037:2117:52
7:22
#9921
30K
18.64 mi12:43:422:17:277:2223:24
7:32
#9471
20M
20.00 mi12:54:072:27:527:2410:25
7:40
#9327
21M
21.00 mi13:02:172:36:027:268:10
8:10
#9232
35K
21.75 mi13:08:052:41:507:265:48
7:45
#9250
23M
23.00 mi13:18:512:52:367:3010:46
8:36
#9529
24M
24.00 mi13:28:083:01:537:359:17
9:17
#10044
40K
24.85 mi13:36:213:10:067:398:13
9:37
#10469
25.2M
25.20 mi13:39:553:13:407:413:34
10:21
#10613
Finish
26.22 mi13:48:353:22:207:438:40
8:30
#10840
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi11607899589959994(Top 35%)8079(Top 50%)8079(Top 143%)
10K6.21 mi3.10 mi10983+6248658+3378658+33710483(Top 37%)8402(Top 52%)8402(Top 149%)
15K9.32 mi3.11 mi10631+3528457+2018457+2019994(Top 35%)8079(Top 50%)8079(Top 143%)
20K12.43 mi3.11 mi10238+3938229+2288229+2289221(Top 32%)7578(Top 47%)7578(Top 134%)
Half13.11 mi0.68 mi10191+478199+308199+309354(Top 33%)7697(Top 48%)7697(Top 136%)
25K15.53 mi2.42 mi9921+2708027+1728027+1728897(Top 31%)7286(Top 45%)7286(Top 129%)
30K18.64 mi3.11 mi9471+4507734+2937734+2937974(Top 28%)6574(Top 41%)6574(Top 117%)
20M20.00 mi1.36 mi9327+1447617+1177617+1178133(Top 29%)6531(Top 41%)6531(Top 116%)
21M21.00 mi1.00 mi9232+957530+877530+878378(Top 29%)6478(Top 40%)6478(Top 115%)
35K21.75 mi0.75 mi9250-187510+207510+2010437(Top 37%)7591(Top 47%)7591(Top 135%)
23M23.00 mi1.25 mi9529-2797635-1257635-12513893(Top 49%)9108(Top 57%)9108(Top 161%)
24M24.00 mi1.00 mi10044-5157850-2157850-21518709(Top 66%)11265(Top 70%)11265(Top 200%)
40K24.85 mi0.85 mi10469-4258043-1938043-19319100(Top 67%)11361(Top 71%)11361(Top 201%)
25.2M25.20 mi0.35 mi10613-1448094-518094-5118372(Top 65%)10980(Top 68%)10980(Top 195%)
Finish26.22 mi1.02 mi10840-2278158-648158-6416214(Top 57%)10022(Top 62%)10022(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9994

Males

8079

M18-39

8079

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10483

Males

8402

M18-39

8402

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9994

Males

8079

M18-39

8079

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

9221

Males

7578

M18-39

7578

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9354

Males

7697

M18-39

7697

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8897

Males

7286

M18-39

7286

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7974

Males

6574

M18-39

6574

30K→20M

18.6 - 20.0 mi

Top 29%
×5stories
+64ft-50ft

Overall

8133

Males

6531

M18-39

6531

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

8378

Males

6478

M18-39

6478

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

10437

Males

7591

M18-39

7591

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

13893

Males

9108

M18-39

9108

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18709

Males

11265

M18-39

11265

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

19100

Males

11361

M18-39

11361

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18372

Males

10980

M18-39

10980

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16214

Males

10022

M18-39

10022

Passing Analysis

Category:
Athletes Passed
2826*
Passed By
2056
Net Change
+767
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11607
5K → 10K70076+624#11607#10983
10K → 15K38331+352#10983#10631
15K → 20K41623+393#10631#10238
20K → Half5710+47#10238#10191
Half → 25K296*26+270#10191#9921
25K → 30K48939+450#9921#9471
30K → 20M17632+144#9471#9327
20M → 21M13641+95#9327#9232
21M → 35K5270-18#9232#9250
35K → 23M57336-279#9250#9529
23M → 24M12525-515#9529#10044
24M → 40K17441-425#10044#10469
40K → 25.2M14158-144#10469#10613
25.2M → Finish21248-227#10613#10840
TOTALS2826*2056+767

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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