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BOSTON MARATHON 2025

Chia-Ling Cheng

Bib: 23633•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:40
Rank: #24392
Start → 5K
29:40 | 9:33/mi
10K· 6.21 mi
1:01:58
Rank: #25359 (-967)
5K → 10K
32:18 | 10:24/mi
15K· 9.32 mi
1:33:15
Rank: #25293 (+66)
10K → 15K
31:17 | 10:04/mi
20K· 12.43 mi
2:06:54
Rank: #25455 (-162)
15K → 20K
33:39 | 10:50/mi
Half· 13.11 mi
2:13:51
Rank: #25431 (+24)
20K → Half
6:57 | 10:11/mi
25K· 15.53 mi
2:40:23
Rank: #25366 (+65)
Half → 25K
26:32 | 10:57/mi
30K· 18.64 mi
3:17:56
Rank: #25445 (-79)
25K → 30K
37:33 | 12:05/mi
20M
3:34:06
Rank: #25440 (+5)
30K → 20M
16:10 | 11:54/mi
21M
3:46:44
Rank: #25394 (+46)
20M → 21M
12:38 | 12:38/mi
35K· 21.75 mi
3:55:14
Rank: #25371 (+23)
21M → 35K
8:30 | 11:22/mi
23M
4:09:30
Rank: #25316 (+55)
35K → 23M
14:16 | 11:24/mi
24M
4:20:52
Rank: #25282 (+34)
23M → 24M
11:22 | 11:22/mi
40K· 24.85 mi
4:30:26
Rank: #25236 (+46)
24M → 40K
9:34 | 11:11/mi
25.2M
4:34:36
Rank: #25219 (+17)
40K → 25.2M
4:10 | 12:05/mi
Finish· 26.22 mi
4:45:44
Rank: #25228 (-9)
25.2M → Finish
11:08 | 10:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:51
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:31:53
Pace11:35 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:5729:409:3329:40
9:33
-
10K
6.21 mi12:00:151:01:589:5832:18
10:24
+0:51
15K
9.32 mi12:31:321:33:1510:0031:17
10:04
-0:20
20K
12.43 mi13:05:112:06:5410:1333:39
10:50
+0:46
Half
13.11 mi13:12:082:13:5110:136:57
10:11
-0:39
25K
15.53 mi13:38:402:40:2310:1926:32
10:57
+0:46
30K
18.64 mi14:16:133:17:5610:3737:33
12:05
+1:08
20M
20.00 mi14:32:233:34:0610:4216:10
11:54
-0:11
21M
21.00 mi14:45:013:46:4410:4812:38
12:38
+0:44
35K
21.75 mi14:53:313:55:1410:498:30
11:22
-1:16
23M
23.00 mi15:07:474:09:3010:5114:16
11:24
+0:02
24M
24.00 mi15:19:094:20:5210:5211:22
11:22
-0:02
40K
24.85 mi15:28:434:30:2610:539:34
11:11
-0:11
25.2M
25.20 mi15:32:534:34:3610:544:10
12:05
+0:54
Finish
26.22 mi15:44:014:45:4410:5411:08
10:56
-1:09

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

9:33 /mi

Average Pace

10:54 /mi

Slowest Pace

12:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:12

35% of race

Time at Steady Pace

1:55:01

40% of race

Time at Slower Pace

1:10:31

25% of race

Average Pace: 10:54 /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 mi11:27:5729:409:3329:40
9:33
#24392
10K
6.21 mi12:00:151:01:589:5832:18
10:24
#25359
15K
9.32 mi12:31:321:33:1510:0031:17
10:04
#25293
20K
12.43 mi13:05:112:06:5410:1333:39
10:50
#25455
Half
13.11 mi13:12:082:13:5110:136:57
10:11
#25431
25K
15.53 mi13:38:402:40:2310:1926:32
10:57
#25366
30K
18.64 mi14:16:133:17:5610:3737:33
12:05
#25445
20M
20.00 mi14:32:233:34:0610:4216:10
11:54
#25440
21M
21.00 mi14:45:013:46:4410:4812:38
12:38
#25394
35K
21.75 mi14:53:313:55:1410:498:30
11:22
#25371
23M
23.00 mi15:07:474:09:3010:5114:16
11:24
#25316
24M
24.00 mi15:19:094:20:5210:5211:22
11:22
#25282
40K
24.85 mi15:28:434:30:2610:539:34
11:11
#25236
25.2M
25.20 mi15:32:534:34:3610:544:10
12:05
#25219
Finish
26.22 mi15:44:014:45:4410:5411:08
10:56
#25228
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi243929902990225131(Top 88%)10295(Top 84%)10295(Top 790%)
10K6.21 mi3.10 mi25359-96710428-52610428-52626086(Top 92%)10837(Top 89%)10837(Top 832%)
15K9.32 mi3.11 mi25293+6610387+4110387+4125131(Top 88%)10295(Top 84%)10295(Top 790%)
20K12.43 mi3.11 mi25455-16210487-10010487-10025760(Top 91%)10675(Top 87%)10675(Top 819%)
Half13.11 mi0.68 mi25431+2410472+1510472+1525209(Top 89%)10384(Top 85%)10384(Top 797%)
25K15.53 mi2.42 mi25366+6510454+1810454+1825121(Top 88%)10357(Top 85%)10357(Top 795%)
30K18.64 mi3.11 mi25445-7910528-7410528-7425700(Top 90%)10786(Top 88%)10786(Top 828%)
20M20.00 mi1.36 mi25440+510537-910537-925104(Top 88%)10535(Top 86%)10535(Top 809%)
21M21.00 mi1.00 mi25394+4610535+210535+224563(Top 86%)10330(Top 84%)10330(Top 793%)
35K21.75 mi0.75 mi25371+2310529+610529+624850(Top 87%)10509(Top 86%)10509(Top 807%)
23M23.00 mi1.25 mi25316+5510502+2710502+2724058(Top 85%)10131(Top 83%)10131(Top 778%)
24M24.00 mi1.00 mi25282+3410499+310499+324667(Top 87%)10473(Top 86%)10473(Top 804%)
40K24.85 mi0.85 mi25236+4610479+2010479+2023514(Top 83%)9956(Top 81%)9956(Top 764%)
25.2M25.20 mi0.35 mi25219+1710473+610473+623347(Top 82%)9844(Top 81%)9844(Top 755%)
Finish26.22 mi1.02 mi25228-910483-1010483-1025201(Top 89%)10750(Top 88%)10750(Top 825%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

25131

Females

10295

F50-54

10295

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

26086

Females

10837

F50-54

10837

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

25131

Females

10295

F50-54

10295

15K→20K

9.3 - 12.4 mi

Top 91%
×5stories
+106ft-86ft

Overall

25760

Females

10675

F50-54

10675

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25209

Females

10384

F50-54

10384

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

25121

Females

10357

F50-54

10357

25K→30K

15.5 - 18.6 mi

Top 90%
×9stories
+181ft-148ft

Overall

25700

Females

10786

F50-54

10786

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

25104

Females

10535

F50-54

10535

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

24563

Females

10330

F50-54

10330

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

24850

Females

10509

F50-54

10509

35K→23M

21.8 - 23.0 mi

Top 85%
×5stories
+23ft-63ft

Overall

24058

Females

10131

F50-54

10131

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

24667

Females

10473

F50-54

10473

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23514

Females

9956

F50-54

9956

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23347

Females

9844

F50-54

9844

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

25201

Females

10750

F50-54

10750

Passing Analysis

Category:
Athletes Passed
917
Passed By
1753
Net Change
-836
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24392
5K → 10K24991-967#24392#25359
10K → 15K171105+66#25359#25293
15K → 20K72234-162#25293#25455
20K → Half3511+24#25455#25431
Half → 25K12560+65#25431#25366
25K → 30K92171-79#25366#25445
30K → 20M5752+5#25445#25440
20M → 21M7529+46#25440#25394
21M → 35K4118+23#25394#25371
35K → 23M7318+55#25371#25316
23M → 24M5319+34#25316#25282
24M → 40K548+46#25282#25236
40K → 25.2M203+17#25236#25219
25.2M → Finish2534-9#25219#25228
TOTALS9171753-836
📊

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