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BOSTON MARATHON 2025

Li Zhang

Bib: 20253•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
30:16
Rank: #24957
Start → 5K
30:16 | 9:45/mi
10K· 6.21 mi
59:33
Rank: #24413 (+544)
5K → 10K
29:17 | 9:26/mi
15K· 9.32 mi
1:28:36
Rank: #24056 (+357)
10K → 15K
29:03 | 9:21/mi
20K· 12.43 mi
1:57:36
Rank: #23649 (+407)
15K → 20K
29:00 | 9:20/mi
Half· 13.11 mi
2:04:07
Rank: #23654 (-5)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:27:22
Rank: #23382 (+272)
Half → 25K
23:15 | 9:35/mi
30K· 18.64 mi
2:58:30
Rank: #23028 (+354)
25K → 30K
31:08 | 10:01/mi
20M
3:12:10
Rank: #22877 (+151)
30K → 20M
13:40 | 10:03/mi
21M
3:22:56
Rank: #22767 (+110)
20M → 21M
10:46 | 10:46/mi
35K· 21.75 mi
3:31:38
Rank: #22882 (-115)
21M → 35K
8:42 | 11:38/mi
23M
3:46:11
Rank: #23012 (-130)
35K → 23M
14:34 | 11:38/mi
24M
3:57:49
Rank: #23122 (-110)
23M → 24M
11:38 | 11:38/mi
40K· 24.85 mi
4:06:52
Rank: #23086 (+36)
24M → 40K
9:03 | 10:35/mi
25.2M
4:10:31
Rank: #23039 (+47)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
4:21:19
Rank: #23100 (-61)
25.2M → Finish
10:48 | 10:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:07
Pace9:28 /mi
2nd Half
Distance13.11 mi
Time2:17:12
Pace10:28 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:1130:169:4530:16
9:45
-
10K
6.21 mi11:54:2859:339:3529:17
9:26
-0:19
15K
9.32 mi12:23:311:28:369:3029:03
9:21
-0:05
20K
12.43 mi12:52:311:57:369:2829:00
9:20
-0:01
Half
13.11 mi12:59:022:04:079:286:31
9:33
+0:13
25K
15.53 mi13:22:172:27:229:2923:15
9:35
+0:02
30K
18.64 mi13:53:252:58:309:3531:08
10:01
+0:26
20M
20.00 mi14:07:053:12:109:3613:40
10:03
+0:02
21M
21.00 mi14:17:513:22:569:4010:46
10:46
+0:43
35K
21.75 mi14:26:333:31:389:448:42
11:38
+0:52
23M
23.00 mi14:41:063:46:119:5014:34
11:38
0:00
24M
24.00 mi14:52:443:57:499:5511:38
11:38
0:00
40K
24.85 mi15:01:474:06:529:569:03
10:35
-1:03
25.2M
25.20 mi15:05:264:10:319:563:39
10:35
0:00
Finish
26.22 mi15:16:144:21:199:5810:48
10:35
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

9:20 /mi

Average Pace

9:58 /mi

Slowest Pace

11:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:06

45% of race

Time at Steady Pace

1:15:04

29% of race

Time at Slower Pace

1:09:09

26% of race

Average Pace: 9:58 /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 mi11:25:1130:169:4530:16
9:45
#24957
10K
6.21 mi11:54:2859:339:3529:17
9:26
#24413
15K
9.32 mi12:23:311:28:369:3029:03
9:21
#24056
20K
12.43 mi12:52:311:57:369:2829:00
9:20
#23649
Half
13.11 mi12:59:022:04:079:286:31
9:33
#23654
25K
15.53 mi13:22:172:27:229:2923:15
9:35
#23382
30K
18.64 mi13:53:252:58:309:3531:08
10:01
#23028
20M
20.00 mi14:07:053:12:109:3613:40
10:03
#22877
21M
21.00 mi14:17:513:22:569:4010:46
10:46
#22767
35K
21.75 mi14:26:333:31:389:448:42
11:38
#22882
23M
23.00 mi14:41:063:46:119:5014:34
11:38
#23012
24M
24.00 mi14:52:443:57:499:5511:38
11:38
#23122
40K
24.85 mi15:01:474:06:529:569:03
10:35
#23086
25.2M
25.20 mi15:05:264:10:319:563:39
10:35
#23039
Finish
26.22 mi15:16:144:21:199:5810:48
10:35
#23100
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi24957101881018823354(Top 82%)9293(Top 76%)9293(Top 713%)
10K6.21 mi3.10 mi24413+5449902+2869902+28623908(Top 84%)9628(Top 79%)9628(Top 739%)
15K9.32 mi3.11 mi24056+3579708+1949708+19423354(Top 82%)9293(Top 76%)9293(Top 713%)
20K12.43 mi3.11 mi23649+4079483+2259483+22522383(Top 79%)8797(Top 72%)8797(Top 675%)
Half13.11 mi0.68 mi23654-59493-109493-1023730(Top 84%)9553(Top 78%)9553(Top 733%)
25K15.53 mi2.42 mi23382+2729350+1439350+14322165(Top 78%)8744(Top 72%)8744(Top 671%)
30K18.64 mi3.11 mi23028+3549205+1459205+14521666(Top 76%)8598(Top 70%)8598(Top 660%)
20M20.00 mi1.36 mi22877+1519149+569149+5621167(Top 75%)8457(Top 69%)8457(Top 649%)
21M21.00 mi1.00 mi22767+1109098+519098+5120763(Top 73%)8327(Top 68%)8327(Top 639%)
35K21.75 mi0.75 mi22882-1159174-769174-7625282(Top 89%)10733(Top 88%)10733(Top 824%)
23M23.00 mi1.25 mi23012-1309268-949268-9424458(Top 86%)10327(Top 84%)10327(Top 793%)
24M24.00 mi1.00 mi23122-1109359-919359-9125106(Top 88%)10679(Top 87%)10679(Top 820%)
40K24.85 mi0.85 mi23086+369354+59354+522179(Top 78%)9301(Top 76%)9301(Top 714%)
25.2M25.20 mi0.35 mi23039+479331+239331+2319378(Top 68%)7866(Top 64%)7866(Top 604%)
Finish26.22 mi1.02 mi23100-619375-449375-4424474(Top 86%)10390(Top 85%)10390(Top 797%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23354

Females

9293

F50-54

9293

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23908

Females

9628

F50-54

9628

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23354

Females

9293

F50-54

9293

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22383

Females

8797

F50-54

8797

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23730

Females

9553

F50-54

9553

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22165

Females

8744

F50-54

8744

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21666

Females

8598

F50-54

8598

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

21167

Females

8457

F50-54

8457

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20763

Females

8327

F50-54

8327

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

25282

Females

10733

F50-54

10733

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24458

Females

10327

F50-54

10327

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

25106

Females

10679

F50-54

10679

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22179

Females

9301

F50-54

9301

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19378

Females

7866

F50-54

7866

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

24474

Females

10390

F50-54

10390

Passing Analysis

Category:
Athletes Passed
2579
Passed By
722
Net Change
+1857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24957
5K → 10K57935+544#24957#24413
10K → 15K38124+357#24413#24056
15K → 20K4158+407#24056#23649
20K → Half2126-5#23649#23654
Half → 25K28412+272#23654#23382
25K → 30K37925+354#23382#23028
30K → 20M16716+151#23028#22877
20M → 21M12919+110#22877#22767
21M → 35K17132-115#22767#22882
35K → 23M36166-130#22882#23012
23M → 24M31141-110#23012#23122
24M → 40K6933+36#23122#23086
40K → 25.2M481+47#23086#23039
25.2M → Finish2384-61#23039#23100
TOTALS2579722+1857
📊

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