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BOSTON MARATHON 2025

Xiaonan Ma

Bib: 28986•M

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0:00
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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

Start
0:00:00
Race begins
5K· 3.11 mi
29:34
Rank: #24296
Start → 5K
29:34 | 9:31/mi
10K· 6.21 mi
1:00:55
Rank: #24986 (-690)
5K → 10K
31:21 | 10:05/mi
15K· 9.32 mi
1:33:13
Rank: #25291 (-305)
10K → 15K
32:18 | 10:24/mi
20K· 12.43 mi
2:08:56
Rank: #25744 (-453)
15K → 20K
35:43 | 11:30/mi
Half· 13.11 mi
2:16:19
Rank: #25791 (-47)
20K → Half
7:23 | 10:49/mi
25K· 15.53 mi
2:45:18
Rank: #25939 (-148)
Half → 25K
28:59 | 11:57/mi
30K· 18.64 mi
3:28:08
Rank: #26331 (-392)
25K → 30K
42:50 | 13:47/mi
20M
3:47:08
Rank: #26464 (-133)
30K → 20M
19:00 | 13:59/mi
21M
4:01:57
Rank: #26510 (-46)
20M → 21M
14:49 | 14:49/mi
35K· 21.75 mi
4:13:37
Rank: #26653 (-143)
21M → 35K
11:40 | 15:36/mi
23M
4:29:52
Rank: #26644 (+9)
35K → 23M
16:15 | 12:59/mi
24M
4:42:58
Rank: #26675 (-31)
23M → 24M
13:06 | 13:06/mi
40K· 24.85 mi
4:54:58
Rank: #26721 (-46)
24M → 40K
12:00 | 14:02/mi
25.2M
5:00:37
Rank: #26756 (-35)
40K → 25.2M
5:39 | 16:23/mi
Finish· 26.22 mi
5:14:02
Rank: #26808 (-52)
25.2M → Finish
13:25 | 13:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:19
Pace10:24 /mi
2nd Half
Distance13.11 mi
Time2:57:43
Pace13:33 /mi
📊Positive Split: 30.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4629:349:3129:34
9:31
-
10K
6.21 mi12:19:071:00:559:4831:21
10:05
+0:34
15K
9.32 mi12:51:251:33:1310:0032:18
10:24
+0:19
20K
12.43 mi13:27:082:08:5610:2235:43
11:30
+1:06
Half
13.11 mi13:34:312:16:1910:247:23
10:49
-0:41
25K
15.53 mi14:03:302:45:1810:3828:59
11:57
+1:08
30K
18.64 mi14:46:203:28:0811:1042:50
13:47
+1:50
20M
20.00 mi15:05:203:47:0811:2119:00
13:59
+0:12
21M
21.00 mi15:20:094:01:5711:3114:49
14:49
+0:50
35K
21.75 mi15:31:494:13:3711:4011:40
15:36
+0:47
23M
23.00 mi15:48:044:29:5211:4416:15
12:59
-2:37
24M
24.00 mi16:01:104:42:5811:4713:06
13:06
+0:07
40K
24.85 mi16:13:104:54:5811:5212:00
14:02
+0:56
25.2M
25.20 mi16:18:495:00:3711:565:39
16:23
+2:21
Finish
26.22 mi16:32:145:14:0211:5913:25
13:10
-3:13

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

9:31 /mi

Average Pace

11:59 /mi

Slowest Pace

16:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:18

53% of race

Time at Steady Pace

1:56:36

37% of race

Time at Slower Pace

32:08

10% of race

Average Pace: 11:59 /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 mi11:47:4629:349:3129:34
9:31
#24296
10K
6.21 mi12:19:071:00:559:4831:21
10:05
#24986
15K
9.32 mi12:51:251:33:1310:0032:18
10:24
#25291
20K
12.43 mi13:27:082:08:5610:2235:43
11:30
#25744
Half
13.11 mi13:34:312:16:1910:247:23
10:49
#25791
25K
15.53 mi14:03:302:45:1810:3828:59
11:57
#25939
30K
18.64 mi14:46:203:28:0811:1042:50
13:47
#26331
20M
20.00 mi15:05:203:47:0811:2119:00
13:59
#26464
21M
21.00 mi15:20:094:01:5711:3114:49
14:49
#26510
35K
21.75 mi15:31:494:13:3711:4011:40
15:36
#26653
23M
23.00 mi15:48:044:29:5211:4416:15
12:59
#26644
24M
24.00 mi16:01:104:42:5811:4713:06
13:06
#26675
40K
24.85 mi16:13:104:54:5811:5212:00
14:02
#26721
25.2M
25.20 mi16:18:495:00:3711:565:39
16:23
#26756
Finish
26.22 mi16:32:145:14:0211:5913:25
13:10
#26808
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24296143871438725763(Top 91%)15042(Top 93%)15042(Top 267%)
10K6.21 mi3.10 mi24986-69014697-31014697-31025514(Top 90%)14919(Top 93%)14919(Top 264%)
15K9.32 mi3.11 mi25291-30514842-14514842-14525763(Top 91%)15042(Top 93%)15042(Top 267%)
20K12.43 mi3.11 mi25744-45315040-19815040-19826625(Top 94%)15385(Top 96%)15385(Top 273%)
Half13.11 mi0.68 mi25791-4715061-2115061-2126298(Top 93%)15237(Top 95%)15237(Top 270%)
25K15.53 mi2.42 mi25939-14815112-5115112-5126388(Top 93%)15250(Top 95%)15250(Top 270%)
30K18.64 mi3.11 mi26331-39215261-14915261-14927354(Top 96%)15595(Top 97%)15595(Top 276%)
20M20.00 mi1.36 mi26464-13315295-3415295-3427278(Top 96%)15514(Top 96%)15514(Top 275%)
21M21.00 mi1.00 mi26510-4615312-1715312-1727003(Top 95%)15365(Top 95%)15365(Top 272%)
35K21.75 mi0.75 mi26653-14315364-5215364-5228175(Top 99%)15956(Top 99%)15956(Top 283%)
23M23.00 mi1.25 mi26644+915342+2215342+2226350(Top 93%)15011(Top 93%)15011(Top 266%)
24M24.00 mi1.00 mi26675-3115351-915351-926963(Top 95%)15281(Top 95%)15281(Top 271%)
40K24.85 mi0.85 mi26721-4615368-1715368-1727204(Top 96%)15388(Top 96%)15388(Top 273%)
25.2M25.20 mi0.35 mi26756-3515377-915377-927865(Top 98%)15741(Top 98%)15741(Top 279%)
Finish26.22 mi1.02 mi26808-5215398-2115398-2127701(Top 98%)15674(Top 97%)15674(Top 278%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25763

Males

15042

M18-39

15042

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25514

Males

14919

M18-39

14919

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25763

Males

15042

M18-39

15042

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

26625

Males

15385

M18-39

15385

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

26298

Males

15237

M18-39

15237

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26388

Males

15250

M18-39

15250

25K→30K

15.5 - 18.6 mi

Top 96%
×9stories
+181ft-148ft

Overall

27354

Males

15595

M18-39

15595

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

27278

Males

15514

M18-39

15514

20M→21M

20.0 - 21.0 mi

Top 95%
×8stories
+106ft-24ft

Overall

27003

Males

15365

M18-39

15365

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

28175

Males

15956

M18-39

15956

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26350

Males

15011

M18-39

15011

23M→24M

23.0 - 24.0 mi

Top 95%
×6stories
+12ft-82ft

Overall

26963

Males

15281

M18-39

15281

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

27204

Males

15388

M18-39

15388

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27865

Males

15741

M18-39

15741

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

27701

Males

15674

M18-39

15674

Passing Analysis

Category:
Athletes Passed
330
Passed By
2842
Net Change
-2512
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24296
5K → 10K45735-690#24296#24986
10K → 15K53358-305#24986#25291
15K → 20K38491-453#25291#25744
20K → Half855-47#25744#25791
Half → 25K44192-148#25791#25939
25K → 30K25417-392#25939#26331
30K → 20M18151-133#26331#26464
20M → 21M2268-46#26464#26510
21M → 35K1144-143#26510#26653
35K → 23M4940+9#26653#26644
23M → 24M940-31#26644#26675
24M → 40K1359-46#26675#26721
40K → 25.2M136-35#26721#26756
25.2M → Finish456-52#26756#26808
TOTALS3302842-2512
📊

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