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BOSTON MARATHON 2025

Ailsa Mccorquodale

Bib: 23839•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F50-54)
#0 / 1303
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:59
Rank: #16921
Start → 5K
24:59 | 8:02/mi
10K· 6.21 mi
49:31
Rank: #16252 (+669)
5K → 10K
24:32 | 7:54/mi
15K· 9.32 mi
1:13:53
Rank: #15734 (+518)
10K → 15K
24:22 | 7:51/mi
20K· 12.43 mi
1:38:47
Rank: #15536 (+198)
15K → 20K
24:54 | 8:01/mi
Half· 13.11 mi
1:44:06
Rank: #15458 (+78)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:03:08
Rank: #14965 (+493)
Half → 25K
19:02 | 7:51/mi
30K· 18.64 mi
2:29:08
Rank: #14736 (+229)
25K → 30K
26:00 | 8:22/mi
20M
2:40:52
Rank: #14694 (+42)
30K → 20M
11:44 | 8:38/mi
21M
2:50:19
Rank: #14745 (-51)
20M → 21M
9:27 | 9:27/mi
35K· 21.75 mi
2:56:15
Rank: #14609 (+136)
21M → 35K
5:56 | 7:56/mi
23M
3:06:41
Rank: #14439 (+170)
35K → 23M
10:26 | 8:20/mi
24M
3:14:56
Rank: #14355 (+84)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:22:01
Rank: #14249 (+106)
24M → 40K
7:05 | 8:17/mi
25.2M
3:25:13
Rank: #14220 (+29)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:33:41
Rank: #14213 (+7)
25.2M → Finish
8:28 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:06
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:49:35
Pace8:22 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:3624:598:0224:59
8:02
-
10K
6.21 mi11:47:0849:317:5824:32
7:54
-0:08
15K
9.32 mi12:11:301:13:537:5624:22
7:51
-0:03
20K
12.43 mi12:36:241:38:477:5724:54
8:01
+0:10
Half
13.11 mi12:41:431:44:067:565:19
7:48
-0:13
25K
15.53 mi13:00:452:03:087:5619:02
7:51
+0:03
30K
18.64 mi13:26:452:29:088:0026:00
8:22
+0:31
20M
20.00 mi13:38:292:40:528:0311:44
8:38
+0:16
21M
21.00 mi13:47:562:50:198:079:27
9:27
+0:49
35K
21.75 mi13:53:522:56:158:065:56
7:56
-1:31
23M
23.00 mi14:04:183:06:418:0710:26
8:20
+0:24
24M
24.00 mi14:12:333:14:568:078:15
8:15
-0:05
40K
24.85 mi14:19:383:22:018:087:05
8:17
+0:02
25.2M
25.20 mi14:22:503:25:138:093:12
9:17
+1:00
Finish
26.22 mi14:31:183:33:418:098:28
8:19
-0:58

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

7:48 /mi

Average Pace

8:09 /mi

Slowest Pace

9:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:11

37% of race

Time at Steady Pace

1:50:07

52% of race

Time at Slower Pace

24:23

11% of race

Average Pace: 8:09 /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 mi11:22:3624:598:0224:59
8:02
#16921
10K
6.21 mi11:47:0849:317:5824:32
7:54
#16252
15K
9.32 mi12:11:301:13:537:5624:22
7:51
#15734
20K
12.43 mi12:36:241:38:477:5724:54
8:01
#15536
Half
13.11 mi12:41:431:44:067:565:19
7:48
#15458
25K
15.53 mi13:00:452:03:087:5619:02
7:51
#14965
30K
18.64 mi13:26:452:29:088:0026:00
8:22
#14736
20M
20.00 mi13:38:292:40:528:0311:44
8:38
#14694
21M
21.00 mi13:47:562:50:198:079:27
9:27
#14745
35K
21.75 mi13:53:522:56:158:065:56
7:56
#14609
23M
23.00 mi14:04:183:06:418:0710:26
8:20
#14439
24M
24.00 mi14:12:333:14:568:078:15
8:15
#14355
40K
24.85 mi14:19:383:22:018:087:05
8:17
#14249
25.2M
25.20 mi14:22:503:25:138:093:12
9:17
#14220
Finish
26.22 mi14:31:183:33:418:098:28
8:19
#14213
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi169215693569314760(Top 52%)4452(Top 36%)4452(Top 342%)
10K6.21 mi3.10 mi16252+6695297+3965297+39615644(Top 55%)4911(Top 40%)4911(Top 377%)
15K9.32 mi3.11 mi15734+5184972+3254972+32514760(Top 52%)4452(Top 36%)4452(Top 342%)
20K12.43 mi3.11 mi15536+1984888+844888+8415052(Top 53%)4667(Top 38%)4667(Top 358%)
Half13.11 mi0.68 mi15458+784839+494839+4914271(Top 50%)4222(Top 35%)4222(Top 324%)
25K15.53 mi2.42 mi14965+4934595+2444595+24412784(Top 45%)3555(Top 29%)3555(Top 273%)
30K18.64 mi3.11 mi14736+2294525+704525+7013956(Top 49%)4342(Top 36%)4342(Top 333%)
20M20.00 mi1.36 mi14694+424525452514648(Top 52%)4847(Top 40%)4847(Top 372%)
21M21.00 mi1.00 mi14745-514575-504575-5015860(Top 56%)5629(Top 46%)5629(Top 432%)
35K21.75 mi0.75 mi14609+1364511+644511+6411837(Top 42%)3576(Top 29%)3576(Top 274%)
23M23.00 mi1.25 mi14439+1704453+584453+5812267(Top 43%)3892(Top 32%)3892(Top 299%)
24M24.00 mi1.00 mi14355+844433+204433+2012939(Top 46%)4289(Top 35%)4289(Top 329%)
40K24.85 mi0.85 mi14249+1064413+204413+2012093(Top 43%)3966(Top 32%)3966(Top 304%)
25.2M25.20 mi0.35 mi14220+294404+94404+913398(Top 47%)4707(Top 38%)4707(Top 361%)
Finish26.22 mi1.02 mi14213+74427-234427-2314980(Top 53%)5465(Top 45%)5465(Top 419%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

14760

Females

4452

F50-54

4452

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

15644

Females

4911

F50-54

4911

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

14760

Females

4452

F50-54

4452

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

15052

Females

4667

F50-54

4667

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

14271

Females

4222

F50-54

4222

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12784

Females

3555

F50-54

3555

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13956

Females

4342

F50-54

4342

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14648

Females

4847

F50-54

4847

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15860

Females

5629

F50-54

5629

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11837

Females

3576

F50-54

3576

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12267

Females

3892

F50-54

3892

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12939

Females

4289

F50-54

4289

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12093

Females

3966

F50-54

3966

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13398

Females

4707

F50-54

4707

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14980

Females

5465

F50-54

5465

Passing Analysis

Category:
Athletes Passed
3505
Passed By
797
Net Change
+2708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16921
5K → 10K74677+669#16921#16252
10K → 15K55840+518#16252#15734
15K → 20K300102+198#15734#15536
20K → Half868+78#15536#15458
Half → 25K50512+493#15458#14965
25K → 30K357128+229#14965#14736
30K → 20M161119+42#14736#14694
20M → 21M87138-51#14694#14745
21M → 35K15014+136#14745#14609
35K → 23M19222+170#14609#14439
23M → 24M11228+84#14439#14355
24M → 40K12620+106#14355#14249
40K → 25.2M4819+29#14249#14220
25.2M → Finish7770+7#14220#14213
TOTALS3505797+2708
📊

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