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BOSTON MARATHON 2025

Chan Kam Peng

Bib: 18632•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Female)
#0 / 12228
Top 33%
Masters (Masters Women)
#0 / 6759
Top 18%
Division (F40-44)
#0 / 1718
Top 37%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:23
Rank: #9515
Start → 5K
22:23 | 7:12/mi
10K· 6.21 mi
45:20
Rank: #10317 (-802)
5K → 10K
22:57 | 7:23/mi
15K· 9.32 mi
1:09:18
Rank: #11409 (-1092)
10K → 15K
23:58 | 7:43/mi
20K· 12.43 mi
1:33:16
Rank: #11678 (-269)
15K → 20K
23:58 | 7:43/mi
Half· 13.11 mi
1:38:30
Rank: #11754 (-76)
20K → Half
5:14 | 7:40/mi
25K· 15.53 mi
1:58:40
Rank: #12517 (-763)
Half → 25K
20:10 | 8:19/mi
30K· 18.64 mi
2:25:38
Rank: #13200 (-683)
25K → 30K
26:58 | 8:41/mi
20M
2:37:32
Rank: #13353 (-153)
30K → 20M
11:54 | 8:45/mi
21M
2:46:52
Rank: #13456 (-103)
20M → 21M
9:20 | 9:20/mi
35K· 21.75 mi
2:53:17
Rank: #13538 (-82)
21M → 35K
6:25 | 8:35/mi
23M
3:03:56
Rank: #13486 (+52)
35K → 23M
10:39 | 8:30/mi
24M
3:12:07
Rank: #13429 (+57)
23M → 24M
8:11 | 8:11/mi
40K· 24.85 mi
3:19:38
Rank: #13502 (-73)
24M → 40K
7:31 | 8:47/mi
25.2M
3:22:31
Rank: #13392 (+110)
40K → 25.2M
2:53 | 8:21/mi
Finish· 26.22 mi
3:31:02
Rank: #13487 (-95)
25.2M → Finish
8:31 | 8:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:30
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:52:32
Pace8:35 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:1722:237:1222:23
7:12
-
10K
6.21 mi11:36:1445:207:1822:57
7:23
+0:11
15K
9.32 mi12:00:121:09:187:2623:58
7:43
+0:20
20K
12.43 mi12:24:101:33:167:3023:58
7:43
0:00
Half
13.11 mi12:29:241:38:307:315:14
7:40
-0:03
25K
15.53 mi12:49:341:58:407:3820:10
8:19
+0:39
30K
18.64 mi13:16:322:25:387:4926:58
8:41
+0:22
20M
20.00 mi13:28:262:37:327:5311:54
8:45
+0:04
21M
21.00 mi13:37:462:46:527:579:20
9:20
+0:35
35K
21.75 mi13:44:112:53:177:586:25
8:35
-0:45
23M
23.00 mi13:54:503:03:568:0010:39
8:30
-0:05
24M
24.00 mi14:03:013:12:078:008:11
8:11
-0:19
40K
24.85 mi14:10:323:19:388:027:31
8:47
+0:36
25.2M
25.20 mi14:13:253:22:318:022:53
8:21
-0:26
Finish
26.22 mi14:21:563:31:028:038:31
8:21
0:00

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

7:12 /mi

Average Pace

8:03 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:30

47% of race

Time at Steady Pace

56:49

27% of race

Time at Slower Pace

55:43

26% of race

Average Pace: 8:03 /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 mi11:13:1722:237:1222:23
7:12
#9515
10K
6.21 mi11:36:1445:207:1822:57
7:23
#10317
15K
9.32 mi12:00:121:09:187:2623:58
7:43
#11409
20K
12.43 mi12:24:101:33:167:3023:58
7:43
#11678
Half
13.11 mi12:29:241:38:307:315:14
7:40
#11754
25K
15.53 mi12:49:341:58:407:3820:10
8:19
#12517
30K
18.64 mi13:16:322:25:387:4926:58
8:41
#13200
20M
20.00 mi13:28:262:37:327:5311:54
8:45
#13353
21M
21.00 mi13:37:462:46:527:579:20
9:20
#13456
35K
21.75 mi13:44:112:53:177:586:25
8:35
#13538
23M
23.00 mi13:54:503:03:568:0010:39
8:30
#13486
24M
24.00 mi14:03:013:12:078:008:11
8:11
#13429
40K
24.85 mi14:10:323:19:388:027:31
8:47
#13502
25.2M
25.20 mi14:13:253:22:318:022:53
8:21
#13392
Finish
26.22 mi14:21:563:31:028:038:31
8:21
#13487
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi95151596159613655(Top 48%)3818(Top 31%)3818(Top 222%)
10K6.21 mi3.10 mi10317-8021965-3691965-36911108(Top 39%)2368(Top 19%)2368(Top 138%)
15K9.32 mi3.11 mi11409-10922534-5692534-56913655(Top 48%)3818(Top 31%)3818(Top 222%)
20K12.43 mi3.11 mi11678-2692701-1672701-16712566(Top 44%)3312(Top 27%)3312(Top 193%)
Half13.11 mi0.68 mi11754-762743-422743-4213233(Top 47%)3633(Top 30%)3633(Top 211%)
25K15.53 mi2.42 mi12517-7633200-4573200-45716028(Top 56%)5323(Top 44%)5323(Top 310%)
30K18.64 mi3.11 mi13200-6833670-4703670-47015874(Top 56%)5382(Top 44%)5382(Top 313%)
20M20.00 mi1.36 mi13353-1533774-1043774-10415422(Top 54%)5272(Top 43%)5272(Top 307%)
21M21.00 mi1.00 mi13456-1033865-913865-9115318(Top 54%)5348(Top 44%)5348(Top 311%)
35K21.75 mi0.75 mi13538-823933-683933-6815943(Top 56%)5734(Top 47%)5734(Top 334%)
23M23.00 mi1.25 mi13486+523948-153948-1513362(Top 47%)4458(Top 36%)4458(Top 259%)
24M24.00 mi1.00 mi13429+573938+103938+1012484(Top 44%)4038(Top 33%)4038(Top 235%)
40K24.85 mi0.85 mi13502-733998-603998-6015149(Top 53%)5593(Top 46%)5593(Top 326%)
25.2M25.20 mi0.35 mi13392+1103955+433955+437842(Top 28%)2030(Top 17%)2030(Top 118%)
Finish26.22 mi1.02 mi13487-954029-744029-7415343(Top 54%)5676(Top 46%)5676(Top 330%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

13655

Females

3818

F40-44

3818

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

11108

Females

2368

F40-44

2368

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

13655

Females

3818

F40-44

3818

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

12566

Females

3312

F40-44

3312

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

13233

Females

3633

F40-44

3633

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

16028

Females

5323

F40-44

5323

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15874

Females

5382

F40-44

5382

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15422

Females

5272

F40-44

5272

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15318

Females

5348

F40-44

5348

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15943

Females

5734

F40-44

5734

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

13362

Females

4458

F40-44

4458

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

12484

Females

4038

F40-44

4038

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15149

Females

5593

F40-44

5593

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7842

Females

2030

F40-44

2030

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2stories
+22ft-21ft

Overall

15343

Females

5676

F40-44

5676

Passing Analysis

Category:
Athletes Passed
973
Passed By
4943
Net Change
-3972
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9515
5K → 10K49849-802#9515#10317
10K → 15K311123-1092#10317#11409
15K → 20K106375-269#11409#11678
20K → Half1187-76#11678#11754
Half → 25K45808-763#11754#12517
25K → 30K99782-683#12517#13200
30K → 20M68221-153#13200#13353
20M → 21M79182-103#13353#13456
21M → 35K30112-82#13456#13538
35K → 23M13785+52#13538#13486
23M → 24M10952+57#13486#13429
24M → 40K54127-73#13429#13502
40K → 25.2M1133+110#13502#13392
25.2M → Finish42137-95#13392#13487
TOTALS9734943-3972
📊

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