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BOSTON MARATHON 2025

Kirsty (coco) Carson

Bib: 17836•F

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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:09
Rank: #8901
Start → 5K
22:09 | 7:08/mi
10K· 6.21 mi
45:21
Rank: #10335 (-1434)
5K → 10K
23:12 | 7:28/mi
15K· 9.32 mi
1:09:28
Rank: #11564 (-1229)
10K → 15K
24:07 | 7:46/mi
20K· 12.43 mi
1:34:08
Rank: #12284 (-720)
15K → 20K
24:40 | 7:56/mi
Half· 13.11 mi
1:39:31
Rank: #12427 (-143)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
1:59:14
Rank: #12806 (-379)
Half → 25K
19:43 | 8:08/mi
30K· 18.64 mi
2:26:00
Rank: #13358 (-552)
25K → 30K
26:46 | 8:37/mi
20M
2:38:05
Rank: #13554 (-196)
30K → 20M
12:05 | 8:54/mi
21M
2:47:32
Rank: #13682 (-128)
20M → 21M
9:27 | 9:27/mi
35K· 21.75 mi
2:54:02
Rank: #13792 (-110)
21M → 35K
6:30 | 8:41/mi
23M
3:05:04
Rank: #13894 (-102)
35K → 23M
11:02 | 8:49/mi
24M
3:13:46
Rank: #14009 (-115)
23M → 24M
8:42 | 8:42/mi
40K· 24.85 mi
3:21:35
Rank: #14119 (-110)
24M → 40K
7:49 | 9:09/mi
25.2M
3:25:04
Rank: #14179 (-60)
40K → 25.2M
3:29 | 10:06/mi
Finish· 26.22 mi
3:34:11
Rank: #14341 (-162)
25.2M → Finish
9:07 | 8:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:31
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:54:40
Pace8:45 /mi
📊Positive Split: 15.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:4222:097:0822:09
7:08
-
10K
6.21 mi11:35:5445:217:1823:12
7:28
+0:20
15K
9.32 mi12:00:011:09:287:2724:07
7:46
+0:18
20K
12.43 mi12:24:411:34:087:3424:40
7:56
+0:10
Half
13.11 mi12:30:041:39:317:355:23
7:53
-0:03
25K
15.53 mi12:49:471:59:147:4119:43
8:08
+0:15
30K
18.64 mi13:16:332:26:007:5026:46
8:37
+0:29
20M
20.00 mi13:28:382:38:057:5412:05
8:54
+0:17
21M
21.00 mi13:38:052:47:327:599:27
9:27
+0:33
35K
21.75 mi13:44:352:54:028:006:30
8:41
-0:46
23M
23.00 mi13:55:373:05:048:0311:02
8:49
+0:08
24M
24.00 mi14:04:193:13:468:048:42
8:42
-0:07
40K
24.85 mi14:12:083:21:358:077:49
9:09
+0:27
25.2M
25.20 mi14:15:373:25:048:083:29
10:06
+0:57
Finish
26.22 mi14:24:443:34:118:109:07
8:57
-1:09

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

7:08 /mi

Average Pace

8:10 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:14

56% of race

Time at Steady Pace

1:14:12

35% of race

Time at Slower Pace

20:45

10% of race

Average Pace: 8:10 /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 mi11:12:4222:097:0822:09
7:08
#8901
10K
6.21 mi11:35:5445:217:1823:12
7:28
#10335
15K
9.32 mi12:00:011:09:287:2724:07
7:46
#11564
20K
12.43 mi12:24:411:34:087:3424:40
7:56
#12284
Half
13.11 mi12:30:041:39:317:355:23
7:53
#12427
25K
15.53 mi12:49:471:59:147:4119:43
8:08
#12806
30K
18.64 mi13:16:332:26:007:5026:46
8:37
#13358
20M
20.00 mi13:28:382:38:057:5412:05
8:54
#13554
21M
21.00 mi13:38:052:47:327:599:27
9:27
#13682
35K
21.75 mi13:44:352:54:028:006:30
8:41
#13792
23M
23.00 mi13:55:373:05:048:0311:02
8:49
#13894
24M
24.00 mi14:04:193:13:468:048:42
8:42
#14009
40K
24.85 mi14:12:083:21:358:077:49
9:09
#14119
25.2M
25.20 mi14:15:373:25:048:083:29
10:06
#14179
Finish
26.22 mi14:24:443:34:118:109:07
8:57
#14341
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi89011333133314063(Top 50%)4055(Top 33%)4055(Top 74%)
10K6.21 mi3.10 mi10335-14341974-6411974-64111806(Top 42%)2720(Top 22%)2720(Top 50%)
15K9.32 mi3.11 mi11564-12292610-6362610-63614063(Top 50%)4055(Top 33%)4055(Top 74%)
20K12.43 mi3.11 mi12284-7203023-4133023-41314459(Top 51%)4347(Top 36%)4347(Top 79%)
Half13.11 mi0.68 mi12427-1433109-863109-8615061(Top 53%)4644(Top 38%)4644(Top 85%)
25K15.53 mi2.42 mi12806-3793367-2583367-25814848(Top 52%)4666(Top 38%)4666(Top 85%)
30K18.64 mi3.11 mi13358-5523748-3813748-38115484(Top 55%)5167(Top 42%)5167(Top 94%)
20M20.00 mi1.36 mi13554-1963880-1323880-13216184(Top 57%)5703(Top 47%)5703(Top 104%)
21M21.00 mi1.00 mi13682-1283994-1143994-11415862(Top 56%)5631(Top 46%)5631(Top 103%)
35K21.75 mi0.75 mi13792-1104076-824076-8216620(Top 59%)6116(Top 50%)6116(Top 112%)
23M23.00 mi1.25 mi13894-1024163-874163-8715190(Top 53%)5430(Top 44%)5430(Top 99%)
24M24.00 mi1.00 mi14009-1154271-1084271-10815755(Top 55%)5773(Top 47%)5773(Top 106%)
40K24.85 mi0.85 mi14119-1104346-754346-7517092(Top 60%)6623(Top 54%)6623(Top 121%)
25.2M25.20 mi0.35 mi14179-604385-394385-3917473(Top 62%)6827(Top 56%)6827(Top 125%)
Finish26.22 mi1.02 mi14341-1624505-1204505-12018767(Top 66%)7463(Top 61%)7463(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

14063

Females

4055

F18-39

4055

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11806

Females

2720

F18-39

2720

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

14063

Females

4055

F18-39

4055

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

14459

Females

4347

F18-39

4347

20K→Half

12.4 - 13.1 mi

Top 53%
×2stories
+19ft-37ft

Overall

15061

Females

4644

F18-39

4644

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14848

Females

4666

F18-39

4666

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

15484

Females

5167

F18-39

5167

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

16184

Females

5703

F18-39

5703

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

15862

Females

5631

F18-39

5631

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16620

Females

6116

F18-39

6116

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

15190

Females

5430

F18-39

5430

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

15755

Females

5773

F18-39

5773

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17092

Females

6623

F18-39

6623

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17473

Females

6827

F18-39

6827

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18767

Females

7463

F18-39

7463

Passing Analysis

Category:
Athletes Passed
708
Passed By
6146
Net Change
-5440
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8901
5K → 10K161448-1434#8901#10335
10K → 15K271256-1229#10335#11564
15K → 20K57777-720#11564#12284
20K → Half6149-143#12284#12427
Half → 25K77456-379#12427#12806
25K → 30K111663-552#12806#13358
30K → 20M79275-196#13358#13554
20M → 21M67195-128#13554#13682
21M → 35K33143-110#13682#13792
35K → 23M81183-102#13792#13894
23M → 24M58173-115#13894#14009
24M → 40K43153-110#14009#14119
40K → 25.2M1979-60#14119#14179
25.2M → Finish34196-162#14179#14341
TOTALS7086146-5440
📊

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