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BOSTON MARATHON 2025

Casandra Degrauwe

Bib: 12499•F

FL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 17%
Division (F18-39)
#0 / 5469
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #10024
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
45:09
Rank: #10063 (-39)
5K → 10K
22:35 | 7:16/mi
15K· 9.32 mi
1:07:48
Rank: #9994 (+69)
10K → 15K
22:39 | 7:17/mi
20K· 12.43 mi
1:30:54
Rank: #9998 (-4)
15K → 20K
23:06 | 7:26/mi
Half· 13.11 mi
1:35:54
Rank: #10011 (-13)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:54:10
Rank: #9993 (+18)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:18:43
Rank: #10071 (-78)
25K → 30K
24:33 | 7:54/mi
20M
2:29:40
Rank: #10088 (-17)
30K → 20M
10:57 | 8:03/mi
21M
2:38:15
Rank: #10132 (-44)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:43:54
Rank: #10053 (+79)
21M → 35K
5:39 | 7:33/mi
23M
2:53:50
Rank: #9997 (+56)
35K → 23M
9:56 | 7:56/mi
24M
3:01:40
Rank: #9977 (+20)
23M → 24M
7:50 | 7:50/mi
40K· 24.85 mi
3:08:28
Rank: #9927 (+50)
24M → 40K
6:48 | 7:57/mi
25.2M
3:11:27
Rank: #9921 (+6)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:18:58
Rank: #9811 (+110)
25.2M → Finish
7:31 | 7:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:54
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:43:04
Pace7:52 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4322:347:1622:34
7:16
-
10K
6.21 mi11:13:1845:097:1622:35
7:16
0:00
15K
9.32 mi11:35:571:07:487:1622:39
7:17
+0:01
20K
12.43 mi11:59:031:30:547:1923:06
7:26
+0:09
Half
13.11 mi12:04:031:35:547:195:00
7:20
-0:06
25K
15.53 mi12:22:191:54:107:2118:16
7:32
+0:12
30K
18.64 mi12:46:522:18:437:2624:33
7:54
+0:22
20M
20.00 mi12:57:492:29:407:2910:57
8:03
+0:09
21M
21.00 mi13:06:242:38:157:328:35
8:35
+0:32
35K
21.75 mi13:12:032:43:547:325:39
7:33
-1:02
23M
23.00 mi13:21:592:53:507:339:56
7:56
+0:23
24M
24.00 mi13:29:493:01:407:347:50
7:50
-0:06
40K
24.85 mi13:36:373:08:287:356:48
7:57
+0:07
25.2M
25.20 mi13:39:363:11:277:362:59
8:39
+0:42
Finish
26.22 mi13:47:073:18:587:367:31
7:23
-1:16

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

7:16 /mi

Average Pace

7:36 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:27

89% of race

Time at Steady Pace

10:57

6% of race

Time at Slower Pace

11:34

6% of race

Average Pace: 7:35 /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 mi10:50:4322:347:1622:34
7:16
#10024
10K
6.21 mi11:13:1845:097:1622:35
7:16
#10063
15K
9.32 mi11:35:571:07:487:1622:39
7:17
#9994
20K
12.43 mi11:59:031:30:547:1923:06
7:26
#9998
Half
13.11 mi12:04:031:35:547:195:00
7:20
#10011
25K
15.53 mi12:22:191:54:107:2118:16
7:32
#9993
30K
18.64 mi12:46:522:18:437:2624:33
7:54
#10071
20M
20.00 mi12:57:492:29:407:2910:57
8:03
#10088
21M
21.00 mi13:06:242:38:157:328:35
8:35
#10132
35K
21.75 mi13:12:032:43:547:325:39
7:33
#10053
23M
23.00 mi13:21:592:53:507:339:56
7:56
#9997
24M
24.00 mi13:29:493:01:407:347:50
7:50
#9977
40K
24.85 mi13:36:373:08:287:356:48
7:57
#9927
25.2M
25.20 mi13:39:363:11:277:362:59
8:39
#9921
Finish
26.22 mi13:47:073:18:587:367:31
7:23
#9811
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10024181918199938(Top 35%)1861(Top 15%)1861(Top 34%)
10K6.21 mi3.10 mi10063-391843-241843-2410108(Top 36%)1876(Top 15%)1876(Top 34%)
15K9.32 mi3.11 mi9994+691842+11842+19938(Top 35%)1861(Top 15%)1861(Top 34%)
20K12.43 mi3.11 mi9998-41867-251867-2510216(Top 36%)2065(Top 17%)2065(Top 38%)
Half13.11 mi0.68 mi10011-131880-131880-1310329(Top 36%)2109(Top 17%)2109(Top 39%)
25K15.53 mi2.42 mi9993+181902-221902-2210260(Top 36%)2215(Top 18%)2215(Top 41%)
30K18.64 mi3.11 mi10071-781990-881990-8810651(Top 37%)2616(Top 21%)2616(Top 48%)
20M20.00 mi1.36 mi10088-172029-392029-3910828(Top 38%)2844(Top 23%)2844(Top 52%)
21M21.00 mi1.00 mi10132-442104-752104-7510994(Top 39%)3089(Top 25%)3089(Top 56%)
35K21.75 mi0.75 mi10053+792091+132091+139049(Top 32%)2143(Top 18%)2143(Top 39%)
23M23.00 mi1.25 mi9997+562109-182109-189546(Top 34%)2512(Top 21%)2512(Top 46%)
24M24.00 mi1.00 mi9977+202133-242133-2410071(Top 35%)2835(Top 23%)2835(Top 52%)
40K24.85 mi0.85 mi9927+502139-62139-69870(Top 35%)2850(Top 23%)2850(Top 52%)
25.2M25.20 mi0.35 mi9921+62152-132152-139752(Top 34%)2878(Top 24%)2878(Top 53%)
Finish26.22 mi1.02 mi9811+1102137+152137+158351(Top 29%)2213(Top 18%)2213(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9938

Females

1861

F18-39

1861

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10108

Females

1876

F18-39

1876

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9938

Females

1861

F18-39

1861

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

10216

Females

2065

F18-39

2065

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10329

Females

2109

F18-39

2109

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

10260

Females

2215

F18-39

2215

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

10651

Females

2616

F18-39

2616

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10828

Females

2844

F18-39

2844

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10994

Females

3089

F18-39

3089

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

9049

Females

2143

F18-39

2143

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9546

Females

2512

F18-39

2512

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

10071

Females

2835

F18-39

2835

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9870

Females

2850

F18-39

2850

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9752

Females

2878

F18-39

2878

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8351

Females

2213

F18-39

2213

Passing Analysis

Category:
Athletes Passed
1779*
Passed By
1557
Net Change
+213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10024
5K → 10K217255-39#10024#10063
10K → 15K208*139+69#10063#9994
15K → 20K179182-4#9994#9998
20K → Half2436-13#9998#10011
Half → 25K159*141+18#10011#9993
25K → 30K205281-78#9993#10071
30K → 20M120136-17#10071#10088
20M → 21M91134-44#10088#10132
21M → 35K9617+79#10132#10053
35K → 23M124*68+56#10053#9997
23M → 24M9473+20#9997#9977
24M → 40K9140+50#9977#9927
40K → 25.2M3731+6#9927#9921
25.2M → Finish13424+110#9921#9811
TOTALS1779*1557+213

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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