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BOSTON MARATHON 2025

Cheryll Ku

Bib: 28017•F

CA

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
31:32
Rank: #25937
Start → 5K
31:32 | 10:09/mi
10K· 6.21 mi
1:03:46
Rank: #26031 (-94)
5K → 10K
32:14 | 10:22/mi
15K· 9.32 mi
1:36:19
Rank: #25970 (+61)
10K → 15K
32:33 | 10:29/mi
20K· 12.43 mi
2:09:54
Rank: #25891 (+79)
15K → 20K
33:35 | 10:49/mi
Half· 13.11 mi
2:16:51
Rank: #25867 (+24)
20K → Half
6:57 | 10:11/mi
25K· 15.53 mi
2:46:02
Rank: #26017 (-150)
Half → 25K
29:11 | 12:02/mi
30K· 18.64 mi
3:21:01
Rank: #25739 (+278)
25K → 30K
34:59 | 11:16/mi
20M
3:36:30
Rank: #25622 (+117)
30K → 20M
15:29 | 11:24/mi
21M
3:49:05
Rank: #25560 (+62)
20M → 21M
12:35 | 12:35/mi
35K· 21.75 mi
3:56:44
Rank: #25478 (+82)
21M → 35K
7:39 | 10:14/mi
23M
4:10:14
Rank: #25360 (+118)
35K → 23M
13:30 | 10:47/mi
24M
4:21:25
Rank: #25312 (+48)
23M → 24M
11:11 | 11:11/mi
40K· 24.85 mi
4:31:06
Rank: #25276 (+36)
24M → 40K
9:41 | 11:20/mi
25.2M
4:35:37
Rank: #25272 (+4)
40K → 25.2M
4:31 | 13:06/mi
Finish· 26.22 mi
4:46:26
Rank: #25260 (+12)
25.2M → Finish
10:49 | 10:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:51
Pace10:26 /mi
2nd Half
Distance13.11 mi
Time2:29:35
Pace11:25 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0731:3210:0931:32
10:09
-
10K
6.21 mi12:20:211:03:4610:1632:14
10:22
+0:13
15K
9.32 mi12:52:541:36:1910:2032:33
10:29
+0:07
20K
12.43 mi13:26:292:09:5410:2733:35
10:49
+0:20
Half
13.11 mi13:33:262:16:5110:266:57
10:11
-0:38
25K
15.53 mi14:02:372:46:0210:4129:11
12:02
+1:51
30K
18.64 mi14:37:363:21:0110:4734:59
11:16
-0:46
20M
20.00 mi14:53:053:36:3010:4915:29
11:24
+0:08
21M
21.00 mi15:05:403:49:0510:5512:35
12:35
+1:11
35K
21.75 mi15:13:193:56:4410:537:39
10:14
-2:21
23M
23.00 mi15:26:494:10:1410:5313:30
10:47
+0:33
24M
24.00 mi15:38:004:21:2510:5411:11
11:11
+0:24
40K
24.85 mi15:47:414:31:0610:549:41
11:20
+0:09
25.2M
25.20 mi15:52:124:35:3710:564:31
13:06
+1:46
Finish
26.22 mi16:03:014:46:2610:5610:49
10:37
-2:29

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

10:09 /mi

Average Pace

10:56 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:22

27% of race

Time at Steady Pace

1:41:38

35% of race

Time at Slower Pace

1:46:26

37% of race

Average Pace: 10:55 /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 mi11:48:0731:3210:0931:32
10:09
#25937
10K
6.21 mi12:20:211:03:4610:1632:14
10:22
#26031
15K
9.32 mi12:52:541:36:1910:2032:33
10:29
#25970
20K
12.43 mi13:26:292:09:5410:2733:35
10:49
#25891
Half
13.11 mi13:33:262:16:5110:266:57
10:11
#25867
25K
15.53 mi14:02:372:46:0210:4129:11
12:02
#26017
30K
18.64 mi14:37:363:21:0110:4734:59
11:16
#25739
20M
20.00 mi14:53:053:36:3010:4915:29
11:24
#25622
21M
21.00 mi15:05:403:49:0510:5512:35
12:35
#25560
35K
21.75 mi15:13:193:56:4410:537:39
10:14
#25478
23M
23.00 mi15:26:494:10:1410:5313:30
10:47
#25360
24M
24.00 mi15:38:004:21:2510:5411:11
11:11
#25312
40K
24.85 mi15:47:414:31:0610:549:41
11:20
#25276
25.2M
25.20 mi15:52:124:35:3710:564:31
13:06
#25272
Finish
26.22 mi16:03:014:46:2610:5610:49
10:37
#25260
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25937107251072525883(Top 91%)10728(Top 88%)10728(Top 823%)
10K6.21 mi3.10 mi26031-9410796-7110796-7126052(Top 92%)10821(Top 88%)10821(Top 830%)
15K9.32 mi3.11 mi25970+6110761+3510761+3525883(Top 91%)10728(Top 88%)10728(Top 823%)
20K12.43 mi3.11 mi25891+7910728+3310728+3325726(Top 91%)10656(Top 87%)10656(Top 818%)
Half13.11 mi0.68 mi25867+2410717+1110717+1125210(Top 89%)10385(Top 85%)10385(Top 797%)
25K15.53 mi2.42 mi26017-15010807-9010807-9026462(Top 93%)11116(Top 91%)11116(Top 853%)
30K18.64 mi3.11 mi25739+27810689+11810689+11824480(Top 86%)10118(Top 83%)10118(Top 777%)
20M20.00 mi1.36 mi25622+11710638+5110638+5124341(Top 86%)10137(Top 83%)10137(Top 778%)
21M21.00 mi1.00 mi25560+6210611+2710611+2724495(Top 86%)10293(Top 84%)10293(Top 790%)
35K21.75 mi0.75 mi25478+8210579+3210579+3222473(Top 79%)9283(Top 76%)9283(Top 712%)
23M23.00 mi1.25 mi25360+11810533+4610533+4622694(Top 80%)9444(Top 77%)9444(Top 725%)
24M24.00 mi1.00 mi25312+4810511+2210511+2224342(Top 86%)10295(Top 84%)10295(Top 790%)
40K24.85 mi0.85 mi25276+3610504+710504+723794(Top 84%)10076(Top 82%)10076(Top 773%)
25.2M25.20 mi0.35 mi25272+410500+410500+425132(Top 88%)10754(Top 88%)10754(Top 825%)
Finish26.22 mi1.02 mi25260+12105001050024513(Top 86%)10414(Top 85%)10414(Top 799%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25883

Females

10728

F50-54

10728

5K→10K

3.1 - 6.2 mi

Top 92%
×5stories
+79ft-138ft

Overall

26052

Females

10821

F50-54

10821

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25883

Females

10728

F50-54

10728

15K→20K

9.3 - 12.4 mi

Top 91%
×5stories
+106ft-86ft

Overall

25726

Females

10656

F50-54

10656

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

25210

Females

10385

F50-54

10385

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26462

Females

11116

F50-54

11116

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

24480

Females

10118

F50-54

10118

30K→20M

18.6 - 20.0 mi

Top 86%
×5stories
+64ft-50ft

Overall

24341

Females

10137

F50-54

10137

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

24495

Females

10293

F50-54

10293

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22473

Females

9283

F50-54

9283

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22694

Females

9444

F50-54

9444

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

24342

Females

10295

F50-54

10295

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23794

Females

10076

F50-54

10076

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

25132

Females

10754

F50-54

10754

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

24513

Females

10414

F50-54

10414

Passing Analysis

Category:
Athletes Passed
1370
Passed By
693
Net Change
+677
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25937
5K → 10K140234-94#25937#26031
10K → 15K15089+61#26031#25970
15K → 20K16485+79#25970#25891
20K → Half317+24#25891#25867
Half → 25K34184-150#25867#26017
25K → 30K28911+278#26017#25739
30K → 20M1214+117#25739#25622
20M → 21M7715+62#25622#25560
21M → 35K831+82#25560#25478
35K → 23M1257+118#25478#25360
23M → 24M6517+48#25360#25312
24M → 40K4711+36#25312#25276
40K → 25.2M1410+4#25276#25272
25.2M → Finish3018+12#25272#25260
TOTALS1370693+677
📊

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