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BOSTON MARATHON 2025

Claire Zhang

Bib: 23037•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:16/mi
28:48
↑ 97↓ 3451.5%
10K· 6.21 mi
9:37/mi
58:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:54/mi
1:29:25
↑ 67↓ 78
20K· 12.43 mi
10:51/mi
2:03:08
↑ 106↓ 860.1%
Half· 13.11 mi
10:17/mi
2:10:09
↑ 19↓ 370.5%
25K· 15.53 mi
11:30/mi
2:38:01
↑ 66↓ 880.2%
30K· 18.64 mi
12:52/mi
3:17:58
↑ 181↓ 1480.2%
20M
12:19/mi
3:34:42
↑ 64↓ 500.2%
21M
13:50/mi
3:48:32
↑ 106↓ 241.6%
35K· 21.75 mi
11:56/mi
3:57:28
↑ 17↓ 861.7%
23M
12:12/mi
4:12:44
↑ 23↓ 630.6%
24M
11:18/mi
4:24:02
↓ 821.3%
40K· 24.85 mi
10:14/mi
4:32:47
↓ 200.3%
25.2M
12:02/mi
4:36:56
↑ 13↓ 160.2%
Finish· 26.22 mi
10:15/mi
4:47:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:09
Pace9:56 /mi
2nd Half
Distance13.11 mi
Time2:37:14
Pace12:00 /mi
📊Positive Split: 20.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:4128:489:1628:48
9:16
-
10K
6.21 mi11:57:3458:419:2729:53
9:37
+0:21
15K
9.32 mi12:28:181:29:259:3630:44
9:54
+0:17
20K
12.43 mi13:02:012:03:089:5433:43
10:51
+0:57
Half
13.11 mi13:09:022:10:099:567:01
10:17
-0:34
25K
15.53 mi13:36:542:38:0110:1027:52
11:30
+1:13
30K
18.64 mi14:16:513:17:5810:3739:57
12:52
+1:22
20M
20.00 mi14:33:353:34:4210:4416:44
12:19
-0:33
21M
21.00 mi14:47:253:48:3210:5313:50
13:50
+1:31
35K
21.75 mi14:56:213:57:2810:558:56
11:56
-1:54
23M
23.00 mi15:11:374:12:4410:5915:16
12:12
+0:16
24M
24.00 mi15:22:554:24:0211:0011:18
11:18
-0:54
40K
24.85 mi15:31:404:32:4710:598:45
10:14
-1:04
25.2M
25.20 mi15:35:494:36:5610:594:09
12:02
+1:48
Finish
26.22 mi15:46:164:47:2310:5810:27
10:15
-1:47

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

9:16 /mi

Average Pace

10:58 /mi

Slowest Pace

13:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:38

40% of race

Time at Steady Pace

1:12:53

25% of race

Time at Slower Pace

1:38:52

34% of race

Average Pace: 10:58 /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 mi11:27:4128:489:1628:48
9:16
#23454
10K
6.21 mi11:57:3458:419:2729:53
9:37
#24016
15K
9.32 mi12:28:181:29:259:3630:44
9:54
#24302
20K
12.43 mi13:02:012:03:089:5433:43
10:51
#24780
Half
13.11 mi13:09:022:10:099:567:01
10:17
#24812
25K
15.53 mi13:36:542:38:0110:1027:52
11:30
#25069
30K
18.64 mi14:16:513:17:5810:3739:57
12:52
#25451
20M
20.00 mi14:33:353:34:4210:4416:44
12:19
#25482
21M
21.00 mi14:47:253:48:3210:5313:50
13:50
#25520
35K
21.75 mi14:56:213:57:2810:558:56
11:56
#25532
23M
23.00 mi15:11:374:12:4410:5915:16
12:12
#25552
24M
24.00 mi15:22:554:24:0211:0011:18
11:18
#25518
40K
24.85 mi15:31:404:32:4710:598:45
10:14
#25384
25.2M
25.20 mi15:35:494:36:5610:594:09
12:02
#25366
Finish
26.22 mi15:46:164:47:2310:5810:27
10:15
#25319
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi234549419941924751(Top 87%)10086(Top 82%)10086(Top 1015%)
10K6.21 mi3.10 mi24016-5629695-2769695-27624399(Top 86%)9915(Top 81%)9915(Top 997%)
15K9.32 mi3.11 mi24302-2869843-1489843-14824751(Top 87%)10086(Top 82%)10086(Top 1015%)
20K12.43 mi3.11 mi24780-47810111-26810111-26825783(Top 91%)10688(Top 87%)10688(Top 1075%)
Half13.11 mi0.68 mi24812-3210130-1910130-1925403(Top 89%)10494(Top 86%)10494(Top 1056%)
25K15.53 mi2.42 mi25069-25710292-16210292-16225843(Top 91%)10771(Top 88%)10771(Top 1084%)
30K18.64 mi3.11 mi25451-38210533-24110533-24126533(Top 93%)11239(Top 92%)11239(Top 1131%)
20M20.00 mi1.36 mi25482-3110562-2910562-2925684(Top 90%)10837(Top 89%)10837(Top 1090%)
21M21.00 mi1.00 mi25520-3810587-2510587-2526034(Top 92%)11065(Top 90%)11065(Top 1113%)
35K21.75 mi0.75 mi25532-1210607-2010607-2025752(Top 91%)10977(Top 90%)10977(Top 1104%)
23M23.00 mi1.25 mi25552-2010632-2510632-2525374(Top 89%)10792(Top 88%)10792(Top 1086%)
24M24.00 mi1.00 mi25518+3410627+510627+524547(Top 86%)10408(Top 85%)10408(Top 1047%)
40K24.85 mi0.85 mi25384+13410560+6710560+6721145(Top 74%)8745(Top 72%)8745(Top 880%)
25.2M25.20 mi0.35 mi25366+1810547+1310547+1323243(Top 82%)9793(Top 80%)9793(Top 985%)
Finish26.22 mi1.02 mi25319+4710533+1410533+1423650(Top 83%)10004(Top 82%)10004(Top 1006%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24751

Females

10086

F55-59

10086

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24399

Females

9915

F55-59

9915

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24751

Females

10086

F55-59

10086

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

25783

Females

10688

F55-59

10688

20K→Half

12.4 - 13.1 mi

Top 89%
×2story building
+19ft-37ft

Overall

25403

Females

10494

F55-59

10494

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25843

Females

10771

F55-59

10771

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

26533

Females

11239

F55-59

11239

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25684

Females

10837

F55-59

10837

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

26034

Females

11065

F55-59

11065

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

25752

Females

10977

F55-59

10977

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25374

Females

10792

F55-59

10792

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

24547

Females

10408

F55-59

10408

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21145

Females

8745

F55-59

8745

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23243

Females

9793

F55-59

9793

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23650

Females

10004

F55-59

10004

Passing Analysis

Category:
Athletes Passed
666
Passed By
2531
Net Change
-1865
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23454
5K → 10K76638-562#23454#24016
10K → 15K63349-286#24016#24302
15K → 20K32510-478#24302#24780
20K → Half1547-32#24780#24812
Half → 25K40297-257#24812#25069
25K → 30K29411-382#25069#25451
30K → 20M4374-31#25451#25482
20M → 21M2765-38#25482#25520
21M → 35K2840-12#25520#25532
35K → 23M4161-20#25532#25552
23M → 24M5521+34#25552#25518
24M → 40K1340+134#25518#25384
40K → 25.2M246+18#25384#25366
25.2M → Finish5912+47#25366#25319
TOTALS6662531-1865
📊

Passing Visuals

Category:
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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