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BOSTON MARATHON 2025

April Chu

Bib: 29772•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 (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:17
Rank: #26511
Start → 5K
32:17 | 10:23/mi
10K· 6.21 mi
1:05:09
Rank: #26461 (+50)
5K → 10K
32:52 | 10:35/mi
15K· 9.32 mi
1:38:44
Rank: #26448 (+13)
10K → 15K
33:35 | 10:49/mi
20K· 12.43 mi
2:13:06
Rank: #26340 (+108)
15K → 20K
34:22 | 11:04/mi
Half· 13.11 mi
2:20:30
Rank: #26339 (+1)
20K → Half
7:24 | 10:51/mi
25K· 15.53 mi
2:48:31
Rank: #26267 (+72)
Half → 25K
28:01 | 11:33/mi
30K· 18.64 mi
3:27:17
Rank: #26256 (+11)
25K → 30K
38:46 | 12:29/mi
20M
3:44:05
Rank: #26218 (+38)
30K → 20M
16:48 | 12:22/mi
21M
3:58:06
Rank: #26258 (-40)
20M → 21M
14:01 | 14:01/mi
35K· 21.75 mi
4:07:20
Rank: #26267 (-9)
21M → 35K
9:14 | 12:21/mi
23M
4:23:34
Rank: #26274 (-7)
35K → 23M
16:14 | 12:58/mi
24M
4:35:54
Rank: #26271 (+3)
23M → 24M
12:20 | 12:20/mi
40K· 24.85 mi
4:47:04
Rank: #26287 (-16)
24M → 40K
11:10 | 13:04/mi
25.2M
4:51:40
Rank: #26283 (+4)
40K → 25.2M
4:36 | 13:20/mi
Finish· 26.22 mi
5:02:33
Rank: #26247 (+36)
25.2M → Finish
10:53 | 10:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:30
Pace10:43 /mi
2nd Half
Distance13.11 mi
Time2:42:03
Pace12:22 /mi
📊Positive Split: 15.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5632:1710:2332:17
10:23
-
10K
6.21 mi12:23:481:05:0910:2932:52
10:35
+0:12
15K
9.32 mi12:57:231:38:4410:3633:35
10:49
+0:14
20K
12.43 mi13:31:452:13:0610:4334:22
11:04
+0:15
Half
13.11 mi13:39:092:20:3010:437:24
10:51
-0:13
25K
15.53 mi14:07:102:48:3110:5128:01
11:33
+0:42
30K
18.64 mi14:45:563:27:1711:0738:46
12:29
+0:56
20M
20.00 mi15:02:443:44:0511:1216:48
12:22
-0:07
21M
21.00 mi15:16:453:58:0611:2014:01
14:01
+1:39
35K
21.75 mi15:25:594:07:2011:229:14
12:21
-1:40
23M
23.00 mi15:42:134:23:3411:2816:14
12:58
+0:37
24M
24.00 mi15:54:334:35:5411:3012:20
12:20
-0:38
40K
24.85 mi16:05:434:47:0411:3311:10
13:04
+0:44
25.2M
25.20 mi16:10:194:51:4011:344:36
13:20
+0:16
Finish
26.22 mi16:21:125:02:3311:3310:53
10:41
-2:39

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

10:23 /mi

Average Pace

11:33 /mi

Slowest Pace

14:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:24

59% of race

Time at Steady Pace

1:17:08

25% of race

Time at Slower Pace

46:01

15% of race

Average Pace: 11:32 /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 mi11:50:5632:1710:2332:17
10:23
#26511
10K
6.21 mi12:23:481:05:0910:2932:52
10:35
#26461
15K
9.32 mi12:57:231:38:4410:3633:35
10:49
#26448
20K
12.43 mi13:31:452:13:0610:4334:22
11:04
#26340
Half
13.11 mi13:39:092:20:3010:437:24
10:51
#26339
25K
15.53 mi14:07:102:48:3110:5128:01
11:33
#26267
30K
18.64 mi14:45:563:27:1711:0738:46
12:29
#26256
20M
20.00 mi15:02:443:44:0511:1216:48
12:22
#26218
21M
21.00 mi15:16:453:58:0611:2014:01
14:01
#26258
35K
21.75 mi15:25:594:07:2011:229:14
12:21
#26267
23M
23.00 mi15:42:134:23:3411:2816:14
12:58
#26274
24M
24.00 mi15:54:334:35:5411:3012:20
12:20
#26271
40K
24.85 mi16:05:434:47:0411:3311:10
13:04
#26287
25.2M
25.20 mi16:10:194:51:4011:344:36
13:20
#26283
Finish
26.22 mi16:21:125:02:3311:3310:53
10:41
#26247
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi26511110451104526422(Top 93%)11017(Top 90%)11017(Top 608%)
10K6.21 mi3.10 mi26461+5011031+1411031+1426406(Top 93%)11016(Top 90%)11016(Top 608%)
15K9.32 mi3.11 mi26448+1311025+611025+626422(Top 93%)11017(Top 90%)11017(Top 608%)
20K12.43 mi3.11 mi26340+10810971+5410971+5426095(Top 92%)10861(Top 89%)10861(Top 599%)
Half13.11 mi0.68 mi26339+110970+110970+126308(Top 93%)11001(Top 90%)11001(Top 607%)
25K15.53 mi2.42 mi26267+7210931+3910931+3925928(Top 91%)10823(Top 89%)10823(Top 597%)
30K18.64 mi3.11 mi26256+1110960-2910960-2926146(Top 92%)11025(Top 90%)11025(Top 608%)
20M20.00 mi1.36 mi26218+3810958+210958+225749(Top 91%)10876(Top 89%)10876(Top 600%)
21M21.00 mi1.00 mi26258-4010997-3910997-3926245(Top 92%)11178(Top 91%)11178(Top 617%)
35K21.75 mi0.75 mi26267-911005-811005-826281(Top 93%)11230(Top 92%)11230(Top 619%)
23M23.00 mi1.25 mi26274-711024-1911024-1926324(Top 93%)11259(Top 92%)11259(Top 621%)
24M24.00 mi1.00 mi26271+311036-1211036-1226088(Top 92%)11167(Top 91%)11167(Top 616%)
40K24.85 mi0.85 mi26287-1611050-1411050-1426343(Top 93%)11312(Top 93%)11312(Top 624%)
25.2M25.20 mi0.35 mi26283+411048+211048+225442(Top 90%)10913(Top 89%)10913(Top 602%)
Finish26.22 mi1.02 mi26247+3611033+1511033+1524673(Top 87%)10499(Top 86%)10499(Top 579%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21stories
+97ft-345ft

Overall

26422

Females

11017

F45-49

11017

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

26406

Females

11016

F45-49

11016

10K→15K

6.2 - 9.3 mi

Top 93%
×3stories
+67ft-78ft

Overall

26422

Females

11017

F45-49

11017

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26095

Females

10861

F45-49

10861

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

26308

Females

11001

F45-49

11001

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

25928

Females

10823

F45-49

10823

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26146

Females

11025

F45-49

11025

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

25749

Females

10876

F45-49

10876

20M→21M

20.0 - 21.0 mi

Top 92%
×8stories
+106ft-24ft

Overall

26245

Females

11178

F45-49

11178

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

26281

Females

11230

F45-49

11230

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26324

Females

11259

F45-49

11259

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

26088

Females

11167

F45-49

11167

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26343

Females

11312

F45-49

11312

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25442

Females

10913

F45-49

10913

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

24673

Females

10499

F45-49

10499

Passing Analysis

Category:
Athletes Passed
1020
Passed By
756
Net Change
+264
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26511
5K → 10K191141+50#26511#26461
10K → 15K133120+13#26461#26448
15K → 20K17870+108#26448#26340
20K → Half2524+1#26340#26339
Half → 25K12856+72#26339#26267
25K → 30K10594+11#26267#26256
30K → 20M6729+38#26256#26218
20M → 21M2969-40#26218#26258
21M → 35K1827-9#26258#26267
35K → 23M3441-7#26267#26274
23M → 24M3128+3#26274#26271
24M → 40K1935-16#26271#26287
40K → 25.2M1410+4#26287#26283
25.2M → Finish4812+36#26283#26247
TOTALS1020756+264
📊

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