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BOSTON MARATHON 2025

Corri Heiden

Bib: 22992•F

IL

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:50
Rank: #16553
Start → 5K
24:50 | 8:00/mi
10K· 6.21 mi
50:21
Rank: #17288 (-735)
5K → 10K
25:31 | 8:13/mi
15K· 9.32 mi
1:16:17
Rank: #17668 (-380)
10K → 15K
25:56 | 8:21/mi
20K· 12.43 mi
1:44:26
Rank: #18680 (-1012)
15K → 20K
28:09 | 9:04/mi
Half· 13.11 mi
1:50:19
Rank: #18740 (-60)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:13:56
Rank: #19634 (-894)
Half → 25K
23:37 | 9:44/mi
30K· 18.64 mi
2:45:19
Rank: #20231 (-597)
25K → 30K
31:23 | 10:06/mi
20M
2:59:49
Rank: #20511 (-280)
30K → 20M
14:30 | 10:40/mi
21M
3:12:15
Rank: #20905 (-394)
20M → 21M
12:26 | 12:26/mi
35K· 21.75 mi
3:21:01
Rank: #21217 (-312)
21M → 35K
8:46 | 11:43/mi
23M
3:34:43
Rank: #21369 (-152)
35K → 23M
13:42 | 10:57/mi
24M
3:46:03
Rank: #21581 (-212)
23M → 24M
11:20 | 11:20/mi
40K· 24.85 mi
3:56:28
Rank: #21791 (-210)
24M → 40K
10:25 | 12:11/mi
25.2M
4:00:31
Rank: #21798 (-7)
40K → 25.2M
4:03 | 11:45/mi
Finish· 26.22 mi
4:11:13
Rank: #21894 (-96)
25.2M → Finish
10:42 | 10:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:19
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:20:54
Pace10:45 /mi
📊Positive Split: 27.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5124:508:0024:50
8:00
-
10K
6.21 mi11:46:2250:218:0625:31
8:13
+0:13
15K
9.32 mi12:12:181:16:178:1125:56
8:21
+0:08
20K
12.43 mi12:40:271:44:268:2428:09
9:04
+0:43
Half
13.11 mi12:46:201:50:198:255:53
8:37
-0:27
25K
15.53 mi13:09:572:13:568:3723:37
9:44
+1:07
30K
18.64 mi13:41:202:45:198:5231:23
10:06
+0:22
20M
20.00 mi13:55:502:59:498:5914:30
10:40
+0:34
21M
21.00 mi14:08:163:12:159:0912:26
12:26
+1:46
35K
21.75 mi14:17:023:21:019:158:46
11:43
-0:43
23M
23.00 mi14:30:443:34:439:2013:42
10:57
-0:46
24M
24.00 mi14:42:043:46:039:2511:20
11:20
+0:23
40K
24.85 mi14:52:293:56:289:3110:25
12:11
+0:51
25.2M
25.20 mi14:56:324:00:319:334:03
11:45
-0:26
Finish
26.22 mi15:07:144:11:139:3510:42
10:30
-1:15

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

8:00 /mi

Average Pace

9:35 /mi

Slowest Pace

12:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:56

53% of race

Time at Steady Pace

1:10:17

28% of race

Time at Slower Pace

47:00

19% of race

Average Pace: 9:35 /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 mi11:20:5124:508:0024:50
8:00
#16553
10K
6.21 mi11:46:2250:218:0625:31
8:13
#17288
15K
9.32 mi12:12:181:16:178:1125:56
8:21
#17668
20K
12.43 mi12:40:271:44:268:2428:09
9:04
#18680
Half
13.11 mi12:46:201:50:198:255:53
8:37
#18740
25K
15.53 mi13:09:572:13:568:3723:37
9:44
#19634
30K
18.64 mi13:41:202:45:198:5231:23
10:06
#20231
20M
20.00 mi13:55:502:59:498:5914:30
10:40
#20511
21M
21.00 mi14:08:163:12:159:0912:26
12:26
#20905
35K
21.75 mi14:17:023:21:019:158:46
11:43
#21217
23M
23.00 mi14:30:443:34:439:2013:42
10:57
#21369
24M
24.00 mi14:42:043:46:039:2511:20
11:20
#21581
40K
24.85 mi14:52:293:56:289:3110:25
12:11
#21791
25.2M
25.20 mi14:56:324:00:319:334:03
11:45
#21798
Finish
26.22 mi15:07:144:11:139:3510:42
10:30
#21894
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi165535489548918384(Top 65%)6547(Top 54%)6547(Top 502%)
10K6.21 mi3.10 mi17288-7355900-4115900-41118000(Top 63%)6294(Top 51%)6294(Top 483%)
15K9.32 mi3.11 mi17668-3806125-2256125-22518384(Top 65%)6547(Top 54%)6547(Top 502%)
20K12.43 mi3.11 mi18680-10126726-6016726-60121276(Top 75%)8189(Top 67%)8189(Top 628%)
Half13.11 mi0.68 mi18740-606756-306756-3020009(Top 70%)7497(Top 61%)7497(Top 575%)
25K15.53 mi2.42 mi19634-8947282-5267282-52622608(Top 80%)8983(Top 73%)8983(Top 689%)
30K18.64 mi3.11 mi20231-5977659-3777659-37721914(Top 77%)8733(Top 71%)8733(Top 670%)
20M20.00 mi1.36 mi20511-2807836-1777836-17722884(Top 81%)9355(Top 77%)9355(Top 718%)
21M21.00 mi1.00 mi20905-3948071-2358071-23524314(Top 86%)10189(Top 83%)10189(Top 782%)
35K21.75 mi0.75 mi21217-3128255-1848255-18425447(Top 90%)10816(Top 88%)10816(Top 830%)
23M23.00 mi1.25 mi21369-1528361-1068361-10623097(Top 81%)9653(Top 79%)9653(Top 741%)
24M24.00 mi1.00 mi21581-2128499-1388499-13824630(Top 87%)10448(Top 85%)10448(Top 802%)
40K24.85 mi0.85 mi21791-2108650-1518650-15125219(Top 89%)10770(Top 88%)10770(Top 827%)
25.2M25.20 mi0.35 mi21798-78655-58655-522681(Top 80%)9499(Top 78%)9499(Top 729%)
Finish26.22 mi1.02 mi21894-968721-668721-6624289(Top 86%)10310(Top 84%)10310(Top 791%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18384

Females

6547

F50-54

6547

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

18000

Females

6294

F50-54

6294

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18384

Females

6547

F50-54

6547

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

21276

Females

8189

F50-54

8189

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

20009

Females

7497

F50-54

7497

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22608

Females

8983

F50-54

8983

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21914

Females

8733

F50-54

8733

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

22884

Females

9355

F50-54

9355

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

24314

Females

10189

F50-54

10189

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25447

Females

10816

F50-54

10816

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

23097

Females

9653

F50-54

9653

23M→24M

23.0 - 24.0 mi

Top 87%
×6stories
+12ft-82ft

Overall

24630

Females

10448

F50-54

10448

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25219

Females

10770

F50-54

10770

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22681

Females

9499

F50-54

9499

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

24289

Females

10310

F50-54

10310

Passing Analysis

Category:
Athletes Passed
557
Passed By
5898
Net Change
-5341
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16553
5K → 10K92827-735#16553#17288
10K → 15K91471-380#17288#17668
15K → 20K311043-1012#17668#18680
20K → Half2686-60#18680#18740
Half → 25K32926-894#18740#19634
25K → 30K82679-597#19634#20231
30K → 20M43323-280#20231#20511
20M → 21M25419-394#20511#20905
21M → 35K12324-312#20905#21217
35K → 23M51203-152#21217#21369
23M → 24M16228-212#21369#21581
24M → 40K13223-210#21581#21791
40K → 25.2M2027-7#21791#21798
25.2M → Finish23119-96#21798#21894
TOTALS5575898-5341
📊

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