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BOSTON MARATHON 2025

Li Zhang

Bib: 23512•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Masters (Masters Women)
#0 / 6759
Top 37%
Division (F50-54)
#0 / 1303
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:03
Rank: #21051
Start → 5K
27:03 | 8:42/mi
10K· 6.21 mi
53:30
Rank: #20444 (+607)
5K → 10K
26:27 | 8:31/mi
15K· 9.32 mi
1:19:52
Rank: #20071 (+373)
10K → 15K
26:22 | 8:29/mi
20K· 12.43 mi
1:45:54
Rank: #19400 (+671)
15K → 20K
26:02 | 8:23/mi
Half· 13.11 mi
1:51:32
Rank: #19309 (+91)
20K → Half
5:38 | 8:15/mi
25K· 15.53 mi
2:12:02
Rank: #18891 (+418)
Half → 25K
20:30 | 8:27/mi
30K· 18.64 mi
2:38:40
Rank: #18213 (+678)
25K → 30K
26:38 | 8:34/mi
20M
2:50:13
Rank: #17848 (+365)
30K → 20M
11:33 | 8:30/mi
21M
2:59:21
Rank: #17627 (+221)
20M → 21M
9:08 | 9:08/mi
35K· 21.75 mi
3:05:21
Rank: #17424 (+203)
21M → 35K
6:00 | 8:01/mi
23M
3:16:09
Rank: #17214 (+210)
35K → 23M
10:48 | 8:38/mi
24M
3:24:30
Rank: #17037 (+177)
23M → 24M
8:21 | 8:21/mi
40K· 24.85 mi
3:31:57
Rank: #16937 (+100)
24M → 40K
7:27 | 8:43/mi
25.2M
3:35:11
Rank: #16872 (+65)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:43:48
Rank: #16841 (+31)
25.2M → Finish
8:37 | 8:27/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:51:32
Pace8:30 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:52:16
Pace8:34 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2027:038:4227:03
8:42
-
10K
6.21 mi11:53:4753:308:3726:27
8:31
-0:11
15K
9.32 mi12:20:091:19:528:3426:22
8:29
-0:02
20K
12.43 mi12:46:111:45:548:3126:02
8:23
-0:06
Half
13.11 mi12:51:491:51:328:305:38
8:15
-0:08
25K
15.53 mi13:12:192:12:028:3020:30
8:27
+0:12
30K
18.64 mi13:38:572:38:408:3126:38
8:34
+0:07
20M
20.00 mi13:50:302:50:138:3111:33
8:30
-0:04
21M
21.00 mi13:59:382:59:218:329:08
9:08
+0:38
35K
21.75 mi14:05:383:05:218:316:00
8:01
-1:07
23M
23.00 mi14:16:263:16:098:3210:48
8:38
+0:37
24M
24.00 mi14:24:473:24:308:318:21
8:21
-0:17
40K
24.85 mi14:32:143:31:578:327:27
8:43
+0:22
25.2M
25.20 mi14:35:283:35:118:323:14
9:23
+0:40
Finish
26.22 mi14:44:053:43:488:338:37
8:27
-0:56

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

8:01 /mi

Average Pace

8:33 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:26

94% of race

Time at Steady Pace

12:22

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:32 /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 mi11:27:2027:038:4227:03
8:42
#21051
10K
6.21 mi11:53:4753:308:3726:27
8:31
#20444
15K
9.32 mi12:20:091:19:528:3426:22
8:29
#20071
20K
12.43 mi12:46:111:45:548:3126:02
8:23
#19400
Half
13.11 mi12:51:491:51:328:305:38
8:15
#19309
25K
15.53 mi13:12:192:12:028:3020:30
8:27
#18891
30K
18.64 mi13:38:572:38:408:3126:38
8:34
#18213
20M
20.00 mi13:50:302:50:138:3111:33
8:30
#17848
21M
21.00 mi13:59:382:59:218:329:08
9:08
#17627
35K
21.75 mi14:05:383:05:218:316:00
8:01
#17424
23M
23.00 mi14:16:263:16:098:3210:48
8:38
#17214
24M
24.00 mi14:24:473:24:308:318:21
8:21
#17037
40K
24.85 mi14:32:143:31:578:327:27
8:43
#16937
25.2M
25.20 mi14:35:283:35:118:323:14
9:23
#16872
Finish
26.22 mi14:44:053:43:488:338:37
8:27
#16841
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi210518108810819244(Top 68%)7024(Top 57%)7024(Top 539%)
10K6.21 mi3.10 mi20444+6077741+3677741+36719880(Top 70%)7398(Top 61%)7398(Top 568%)
15K9.32 mi3.11 mi20071+3737507+2347507+23419244(Top 68%)7024(Top 57%)7024(Top 539%)
20K12.43 mi3.11 mi19400+6717129+3787129+37817444(Top 61%)6026(Top 49%)6026(Top 462%)
Half13.11 mi0.68 mi19309+917087+427087+4217690(Top 62%)6144(Top 50%)6144(Top 472%)
25K15.53 mi2.42 mi18891+4186857+2306857+23016923(Top 60%)5812(Top 48%)5812(Top 446%)
30K18.64 mi3.11 mi18213+6786510+3476510+34715234(Top 54%)5038(Top 41%)5038(Top 387%)
20M20.00 mi1.36 mi17848+3656341+1696341+16913830(Top 49%)4438(Top 36%)4438(Top 341%)
21M21.00 mi1.00 mi17627+2216230+1116230+11114303(Top 50%)4796(Top 39%)4796(Top 368%)
35K21.75 mi0.75 mi17424+2036150+806150+8012462(Top 44%)3897(Top 32%)3897(Top 299%)
23M23.00 mi1.25 mi17214+2106062+886062+8814132(Top 50%)4876(Top 40%)4876(Top 374%)
24M24.00 mi1.00 mi17037+1775980+825980+8213606(Top 48%)4629(Top 38%)4629(Top 355%)
40K24.85 mi0.85 mi16937+1005952+285952+2814729(Top 52%)5383(Top 44%)5383(Top 413%)
25.2M25.20 mi0.35 mi16872+655930+225930+2213979(Top 49%)5022(Top 41%)5022(Top 385%)
Finish26.22 mi1.02 mi16841+315928+25928+215963(Top 56%)6001(Top 49%)6001(Top 461%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19244

Females

7024

F50-54

7024

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

19880

Females

7398

F50-54

7398

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19244

Females

7024

F50-54

7024

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17444

Females

6026

F50-54

6026

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

17690

Females

6144

F50-54

6144

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

16923

Females

5812

F50-54

5812

25K→30K

15.5 - 18.6 mi

Top 54%
×9stories
+181ft-148ft

Overall

15234

Females

5038

F50-54

5038

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13830

Females

4438

F50-54

4438

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

14303

Females

4796

F50-54

4796

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

12462

Females

3897

F50-54

3897

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14132

Females

4876

F50-54

4876

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

13606

Females

4629

F50-54

4629

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14729

Females

5383

F50-54

5383

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13979

Females

5022

F50-54

5022

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15963

Females

6001

F50-54

6001

Passing Analysis

Category:
Athletes Passed
4533
Passed By
323
Net Change
+4210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21051
5K → 10K707100+607#21051#20444
10K → 15K41441+373#20444#20071
15K → 20K6787+671#20071#19400
20K → Half987+91#19400#19309
Half → 25K42810+418#19309#18891
25K → 30K69315+678#18891#18213
30K → 20M3672+365#18213#17848
20M → 21M23413+221#17848#17627
21M → 35K2041+203#17627#17424
35K → 23M23323+210#17424#17214
23M → 24M18811+177#17214#17037
24M → 40K12424+100#17037#16937
40K → 25.2M7510+65#16937#16872
25.2M → Finish9059+31#16872#16841
TOTALS4533323+4210
📊

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