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BOSTON MARATHON 2025

Jing Cao

Bib: 23510•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
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:21
Rank: #17838
Start → 5K
25:21 | 8:10/mi
10K· 6.21 mi
51:27
Rank: #18492 (-654)
5K → 10K
26:06 | 8:24/mi
15K· 9.32 mi
1:18:12
Rank: #18970 (-478)
10K → 15K
26:45 | 8:37/mi
20K· 12.43 mi
1:46:06
Rank: #19518 (-548)
15K → 20K
27:54 | 8:59/mi
Half· 13.11 mi
1:52:10
Rank: #19617 (-99)
20K → Half
6:04 | 8:54/mi
25K· 15.53 mi
2:14:01
Rank: #19665 (-48)
Half → 25K
21:51 | 9:01/mi
30K· 18.64 mi
2:43:18
Rank: #19652 (+13)
25K → 30K
29:17 | 9:26/mi
20M
2:56:22
Rank: #19659 (-7)
30K → 20M
13:04 | 9:37/mi
21M
3:06:32
Rank: #19616 (+43)
20M → 21M
10:10 | 10:10/mi
35K· 21.75 mi
3:13:11
Rank: #19544 (+72)
21M → 35K
6:39 | 8:53/mi
23M
3:24:54
Rank: #19459 (+85)
35K → 23M
11:43 | 9:21/mi
24M
3:33:46
Rank: #19328 (+131)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:41:29
Rank: #19223 (+105)
24M → 40K
7:43 | 9:02/mi
25.2M
3:44:50
Rank: #19154 (+69)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:53:40
Rank: #19072 (+82)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:10
Pace8:33 /mi
2nd Half
Distance13.11 mi
Time2:01:30
Pace9:16 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0725:218:1025:21
8:10
-
10K
6.21 mi11:50:1351:278:1726:06
8:24
+0:14
15K
9.32 mi12:16:581:18:128:2326:45
8:37
+0:13
20K
12.43 mi12:44:521:46:068:3227:54
8:59
+0:22
Half
13.11 mi12:50:561:52:108:336:04
8:54
-0:05
25K
15.53 mi13:12:472:14:018:3821:51
9:01
+0:07
30K
18.64 mi13:42:042:43:188:4629:17
9:26
+0:25
20M
20.00 mi13:55:082:56:228:4913:04
9:37
+0:11
21M
21.00 mi14:05:183:06:328:5310:10
10:10
+0:33
35K
21.75 mi14:11:573:13:118:536:39
8:53
-1:17
23M
23.00 mi14:23:403:24:548:5511:43
9:21
+0:28
24M
24.00 mi14:32:323:33:468:548:52
8:52
-0:29
40K
24.85 mi14:40:153:41:298:557:43
9:02
+0:10
25.2M
25.20 mi14:43:363:44:508:553:21
9:43
+0:41
Finish
26.22 mi14:52:263:53:408:558:50
8:40
-1:03

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

8:10 /mi

Average Pace

8:55 /mi

Slowest Pace

10:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:02

37% of race

Time at Steady Pace

1:19:03

34% of race

Time at Slower Pace

1:07:35

29% of race

Average Pace: 8:55 /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 mi11:24:0725:218:1025:21
8:10
#17838
10K
6.21 mi11:50:1351:278:1726:06
8:24
#18492
15K
9.32 mi12:16:581:18:128:2326:45
8:37
#18970
20K
12.43 mi12:44:521:46:068:3227:54
8:59
#19518
Half
13.11 mi12:50:561:52:108:336:04
8:54
#19617
25K
15.53 mi13:12:472:14:018:3821:51
9:01
#19665
30K
18.64 mi13:42:042:43:188:4629:17
9:26
#19652
20M
20.00 mi13:55:082:56:228:4913:04
9:37
#19659
21M
21.00 mi14:05:183:06:328:5310:10
10:10
#19616
35K
21.75 mi14:11:573:13:118:536:39
8:53
#19544
23M
23.00 mi14:23:403:24:548:5511:43
9:21
#19459
24M
24.00 mi14:32:323:33:468:548:52
8:52
#19328
40K
24.85 mi14:40:153:41:298:557:43
9:02
#19223
25.2M
25.20 mi14:43:363:44:508:553:21
9:43
#19154
Finish
26.22 mi14:52:263:53:408:558:50
8:40
#19072
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi178386242624219987(Top 70%)7432(Top 61%)7432(Top 570%)
10K6.21 mi3.10 mi18492-6546611-3696611-36919212(Top 68%)7008(Top 57%)7008(Top 538%)
15K9.32 mi3.11 mi18970-4786893-2826893-28219987(Top 70%)7432(Top 61%)7432(Top 570%)
20K12.43 mi3.11 mi19518-5487196-3037196-30320861(Top 73%)7976(Top 65%)7976(Top 612%)
Half13.11 mi0.68 mi19617-997258-627258-6221356(Top 75%)8217(Top 67%)8217(Top 631%)
25K15.53 mi2.42 mi19665-487299-417299-4119960(Top 70%)7508(Top 61%)7508(Top 576%)
30K18.64 mi3.11 mi19652+137326-277326-2719647(Top 69%)7471(Top 61%)7471(Top 573%)
20M20.00 mi1.36 mi19659-77353-277353-2719682(Top 69%)7620(Top 62%)7620(Top 585%)
21M21.00 mi1.00 mi19616+437355-27355-218931(Top 67%)7302(Top 60%)7302(Top 560%)
35K21.75 mi0.75 mi19544+727331+247331+2417741(Top 62%)6765(Top 55%)6765(Top 519%)
23M23.00 mi1.25 mi19459+857317+147317+1418069(Top 64%)7018(Top 57%)7018(Top 539%)
24M24.00 mi1.00 mi19328+1317265+527265+5216705(Top 59%)6330(Top 52%)6330(Top 486%)
40K24.85 mi0.85 mi19223+1057223+427223+4216494(Top 58%)6317(Top 52%)6317(Top 485%)
25.2M25.20 mi0.35 mi19154+697197+267197+2615786(Top 56%)5997(Top 49%)5997(Top 460%)
Finish26.22 mi1.02 mi19072+827169+287169+2817321(Top 61%)6724(Top 55%)6724(Top 516%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19987

Females

7432

F50-54

7432

5K→10K

3.1 - 6.2 mi

Top 68%
×5stories
+79ft-138ft

Overall

19212

Females

7008

F50-54

7008

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19987

Females

7432

F50-54

7432

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20861

Females

7976

F50-54

7976

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

21356

Females

8217

F50-54

8217

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

19960

Females

7508

F50-54

7508

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19647

Females

7471

F50-54

7471

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19682

Females

7620

F50-54

7620

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

18931

Females

7302

F50-54

7302

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17741

Females

6765

F50-54

6765

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18069

Females

7018

F50-54

7018

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

16705

Females

6330

F50-54

6330

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16494

Females

6317

F50-54

6317

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15786

Females

5997

F50-54

5997

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

17321

Females

6724

F50-54

6724

Passing Analysis

Category:
Athletes Passed
1499
Passed By
2733
Net Change
-1234
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17838
5K → 10K88742-654#17838#18492
10K → 15K71549-478#18492#18970
15K → 20K72620-548#18970#19518
20K → Half14113-99#19518#19617
Half → 25K140188-48#19617#19665
25K → 30K234221+13#19665#19652
30K → 20M96103-7#19652#19659
20M → 21M12784+43#19659#19616
21M → 35K8816+72#19616#19544
35K → 23M13146+85#19544#19459
23M → 24M14413+131#19459#19328
24M → 40K11813+105#19328#19223
40K → 25.2M745+69#19223#19154
25.2M → Finish10220+82#19154#19072
TOTALS14992733-1234
📊

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