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BOSTON MARATHON 2025

Heather Croft

Bib: 23668•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Masters (Masters Women)
#0 / 6759
Top 37%
Division (F55-59)
#0 / 994
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:34
Rank: #18297
Start → 5K
8:14/mi
25:34 split
10K· 6.21 mi
51:21
Rank: #18404 (-107)
5K → 10K
8:18/mi
25:47 split
15K· 9.32 mi
1:17:07
Rank: #18238 (+166)
10K → 15K
8:18/mi
25:46 split
20K· 12.43 mi
1:43:09
Rank: #18005 (+233)
15K → 20K
8:23/mi
26:02 split
Half· 13.11 mi
1:48:50
Rank: #17993 (+12)
20K → Half
8:20/mi
5:41 split
25K· 15.53 mi
2:09:36
Rank: #17882 (+111)
Half → 25K
8:34/mi
20:46 split
30K· 18.64 mi
2:37:02
Rank: #17624 (+258)
25K → 30K
8:50/mi
27:26 split
20M
2:49:07
Rank: #17496 (+128)
30K → 20M
8:54/mi
12:05 split
21M
2:58:42
Rank: #17426 (+70)
20M → 21M
9:35/mi
9:35 split
35K· 21.75 mi
3:04:49
Rank: #17266 (+160)
21M → 35K
8:11/mi
6:07 split
23M
3:15:51
Rank: #17111 (+155)
35K → 23M
8:49/mi
11:02 split
24M
3:24:25
Rank: #17007 (+104)
23M → 24M
8:34/mi
8:34 split
40K· 24.85 mi
3:31:51
Rank: #16908 (+99)
24M → 40K
8:42/mi
7:26 split
25.2M
3:35:07
Rank: #16843 (+65)
40K → 25.2M
9:28/mi
3:16 split
Finish· 26.22 mi
3:43:57
Rank: #16886 (-43)
25.2M → Finish
8:40/mi
8:50 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:50
Pace8:18 /mi
2nd Half
Distance13.11 mi
Time1:55:07
Pace8:47 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4325:348:1425:34
8:14
-
10K
6.21 mi11:50:3051:218:1625:47
8:18
+0:04
15K
9.32 mi12:16:161:17:078:1625:46
8:18
0:00
20K
12.43 mi12:42:181:43:098:1826:02
8:23
+0:05
Half
13.11 mi12:47:591:48:508:185:41
8:20
-0:03
25K
15.53 mi13:08:452:09:368:2120:46
8:34
+0:14
30K
18.64 mi13:36:112:37:028:2527:26
8:50
+0:16
20M
20.00 mi13:48:162:49:078:2712:05
8:54
+0:04
21M
21.00 mi13:57:512:58:428:319:35
9:35
+0:41
35K
21.75 mi14:03:583:04:498:306:07
8:11
-1:24
23M
23.00 mi14:15:003:15:518:3111:02
8:49
+0:38
24M
24.00 mi14:23:343:24:258:318:34
8:34
-0:15
40K
24.85 mi14:31:003:31:518:317:26
8:42
+0:08
25.2M
25.20 mi14:34:163:35:078:323:16
9:28
+0:46
Finish
26.22 mi14:43:063:43:578:338:50
8:40
-0:48

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

8:11 /mi

Average Pace

8:33 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:31:06

94% of race

Time at Steady Pace

12:51

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 mi11:24:4325:348:1425:34
8:14
#18297
10K
6.21 mi11:50:3051:218:1625:47
8:18
#18404
15K
9.32 mi12:16:161:17:078:1625:46
8:18
#18238
20K
12.43 mi12:42:181:43:098:1826:02
8:23
#18005
Half
13.11 mi12:47:591:48:508:185:41
8:20
#17993
25K
15.53 mi13:08:452:09:368:2120:46
8:34
#17882
30K
18.64 mi13:36:112:37:028:2527:26
8:50
#17624
20M
20.00 mi13:48:162:49:078:2712:05
8:54
#17496
21M
21.00 mi13:57:512:58:428:319:35
9:35
#17426
35K
21.75 mi14:03:583:04:498:306:07
8:11
#17266
23M
23.00 mi14:15:003:15:518:3111:02
8:49
#17111
24M
24.00 mi14:23:343:24:258:318:34
8:34
#17007
40K
24.85 mi14:31:003:31:518:317:26
8:42
#16908
25.2M
25.20 mi14:34:163:35:078:323:16
9:28
#16843
Finish
26.22 mi14:43:063:43:578:338:50
8:40
#16886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi182976525652518015(Top 63%)6326(Top 52%)6326(Top 636%)
10K6.21 mi3.10 mi18404-1076560-356560-3518557(Top 65%)6626(Top 54%)6626(Top 667%)
15K9.32 mi3.11 mi18238+1666467+936467+9318015(Top 63%)6326(Top 52%)6326(Top 636%)
20K12.43 mi3.11 mi18005+2336337+1306337+13017445(Top 61%)6027(Top 49%)6027(Top 606%)
Half13.11 mi0.68 mi17993+126333+46333+418141(Top 64%)6391(Top 52%)6391(Top 643%)
25K15.53 mi2.42 mi17882+1116286+476286+4717586(Top 62%)6181(Top 51%)6181(Top 622%)
30K18.64 mi3.11 mi17624+2586197+896197+8916784(Top 59%)5911(Top 48%)5911(Top 595%)
20M20.00 mi1.36 mi17496+1286146+516146+5116211(Top 57%)5730(Top 47%)5730(Top 576%)
21M21.00 mi1.00 mi17426+706128+186128+1816475(Top 58%)5963(Top 49%)5963(Top 600%)
35K21.75 mi0.75 mi17266+1606056+726056+7213535(Top 48%)4466(Top 37%)4466(Top 449%)
23M23.00 mi1.25 mi17111+1556002+546002+5415198(Top 54%)5438(Top 44%)5438(Top 547%)
24M24.00 mi1.00 mi17007+1045960+425960+4214972(Top 53%)5367(Top 44%)5367(Top 540%)
40K24.85 mi0.85 mi16908+995935+255935+2514621(Top 51%)5320(Top 44%)5320(Top 535%)
25.2M25.20 mi0.35 mi16843+655916+195916+1914523(Top 51%)5312(Top 43%)5312(Top 534%)
Finish26.22 mi1.02 mi16886-435955-395955-3917299(Top 61%)6702(Top 55%)6702(Top 674%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

18015

Females

6326

F55-59

6326

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18557

Females

6626

F55-59

6626

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

18015

Females

6326

F55-59

6326

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17445

Females

6027

F55-59

6027

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18141

Females

6391

F55-59

6391

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

17586

Females

6181

F55-59

6181

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

16784

Females

5911

F55-59

5911

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16211

Females

5730

F55-59

5730

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16475

Females

5963

F55-59

5963

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

13535

Females

4466

F55-59

4466

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15198

Females

5438

F55-59

5438

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14972

Females

5367

F55-59

5367

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14621

Females

5320

F55-59

5320

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14523

Females

5312

F55-59

5312

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

17299

Females

6702

F55-59

6702

Passing Analysis

Category:
Athletes Passed
2457
Passed By
1046
Net Change
+1411
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18297
5K → 10K207314-107#18297#18404
10K → 15K273107+166#18404#18238
15K → 20K30673+233#18238#18005
20K → Half4230+12#18005#17993
Half → 25K211100+111#17993#17882
25K → 30K363105+258#17882#17624
30K → 20M17042+128#17624#17496
20M → 21M13565+70#17496#17426
21M → 35K1677+160#17426#17266
35K → 23M18126+155#17266#17111
23M → 24M13935+104#17111#17007
24M → 40K13233+99#17007#16908
40K → 25.2M7510+65#16908#16843
25.2M → Finish5699-43#16843#16886
TOTALS24571046+1411
📊

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