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BOSTON MARATHON 2025

Kim Larson

Bib: 10774•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
24:31
Rank: #15624
Start → 5K
24:31 | 7:53/mi
10K· 6.21 mi
48:49
Rank: #15312 (+312)
5K → 10K
24:18 | 7:49/mi
15K· 9.32 mi
1:12:51
Rank: #14788 (+524)
10K → 15K
24:02 | 7:44/mi
20K· 12.43 mi
1:37:02
Rank: #14327 (+461)
15K → 20K
24:11 | 7:47/mi
Half· 13.11 mi
1:42:13
Rank: #14236 (+91)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
2:02:18
Rank: #14502 (-266)
Half → 25K
20:05 | 8:17/mi
30K· 18.64 mi
2:33:53
Rank: #16562 (-2060)
25K → 30K
31:35 | 10:10/mi
20M
2:56:26
Rank: #19677 (-3115)
30K → 20M
22:33 | 16:36/mi
21M
3:08:16
Rank: #20019 (-342)
20M → 21M
11:50 | 11:50/mi
35K· 21.75 mi
3:17:03
Rank: #20404 (-385)
21M → 35K
8:47 | 11:44/mi
23M
3:39:41
Rank: #22139 (-1735)
35K → 23M
22:38 | 18:05/mi
24M
3:57:15
Rank: #23058 (-919)
23M → 24M
17:34 | 17:34/mi
40K· 24.85 mi
4:11:31
Rank: #23634 (-576)
24M → 40K
14:16 | 16:41/mi
25.2M
4:17:38
Rank: #23804 (-170)
40K → 25.2M
6:07 | 17:44/mi
Finish· 26.22 mi
4:31:50
Rank: #24174 (-370)
25.2M → Finish
14:12 | 13:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:13
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time2:49:37
Pace12:56 /mi
📊Positive Split: 65.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3624:317:5324:31
7:53
-
10K
6.21 mi11:15:5448:497:5124:18
7:49
-0:04
15K
9.32 mi11:39:561:12:517:4924:02
7:44
-0:05
20K
12.43 mi12:04:071:37:027:4824:11
7:47
+0:03
Half
13.11 mi12:09:181:42:137:485:11
7:36
-0:11
25K
15.53 mi12:29:232:02:187:5220:05
8:17
+0:41
30K
18.64 mi13:00:582:33:538:1531:35
10:10
+1:53
20M
20.00 mi13:23:312:56:268:4922:33
16:36
+6:26
21M
21.00 mi13:35:213:08:168:5811:50
11:50
-4:46
35K
21.75 mi13:44:083:17:039:048:47
11:44
-0:06
23M
23.00 mi14:06:463:39:419:3322:38
18:05
+6:21
24M
24.00 mi14:24:203:57:159:5317:34
17:34
-0:31
40K
24.85 mi14:38:364:11:3110:0714:16
16:41
-0:53
25.2M
25.20 mi14:44:434:17:3810:136:07
17:44
+1:03
Finish
26.22 mi14:58:554:31:5010:2314:12
13:56
-3:48

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

7:36 /mi

Average Pace

10:23 /mi

Slowest Pace

18:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:18

45% of race

Time at Steady Pace

52:12

19% of race

Time at Slower Pace

1:37:20

36% of race

Average Pace: 10:22 /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 mi10:51:3624:317:5324:31
7:53
#15624
10K
6.21 mi11:15:5448:497:5124:18
7:49
#15312
15K
9.32 mi11:39:561:12:517:4924:02
7:44
#14788
20K
12.43 mi12:04:071:37:027:4824:11
7:47
#14327
Half
13.11 mi12:09:181:42:137:485:11
7:36
#14236
25K
15.53 mi12:29:232:02:187:5220:05
8:17
#14502
30K
18.64 mi13:00:582:33:538:1531:35
10:10
#16562
20M
20.00 mi13:23:312:56:268:4922:33
16:36
#19677
21M
21.00 mi13:35:213:08:168:5811:50
11:50
#20019
35K
21.75 mi13:44:083:17:039:048:47
11:44
#20404
23M
23.00 mi14:06:463:39:419:3322:38
18:05
#22139
24M
24.00 mi14:24:203:57:159:5317:34
17:34
#23058
40K
24.85 mi14:38:364:11:3110:0714:16
16:41
#23634
25.2M
25.20 mi14:44:434:17:3810:136:07
17:44
#23804
Finish
26.22 mi14:58:554:31:5010:2314:12
13:56
#24174
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi156244915491513839(Top 49%)3925(Top 32%)3925(Top 72%)
10K6.21 mi3.10 mi15312+3124732+1834732+18315037(Top 53%)4566(Top 37%)4566(Top 83%)
15K9.32 mi3.11 mi14788+5244426+3064426+30613839(Top 49%)3925(Top 32%)3925(Top 72%)
20K12.43 mi3.11 mi14327+4614191+2354191+23513166(Top 46%)3641(Top 30%)3641(Top 67%)
Half13.11 mi0.68 mi14236+914145+464145+4612654(Top 45%)3338(Top 27%)3338(Top 61%)
25K15.53 mi2.42 mi14502-2664339-1944339-19415837(Top 56%)5225(Top 43%)5225(Top 96%)
30K18.64 mi3.11 mi16562-20605563-12245563-122422109(Top 78%)8825(Top 72%)8825(Top 161%)
20M20.00 mi1.36 mi19677-31157361-17987361-179828266(Top 100%)12176(Top 100%)12176(Top 223%)
21M21.00 mi1.00 mi20019-3427582-2217582-22123290(Top 82%)9652(Top 79%)9652(Top 176%)
35K21.75 mi0.75 mi20404-3857816-2347816-23425481(Top 90%)10835(Top 89%)10835(Top 198%)
23M23.00 mi1.25 mi22139-17358796-9808796-98028332(Top 100%)12210(Top 100%)12210(Top 223%)
24M24.00 mi1.00 mi23058-9199322-5269322-52628342(Top 100%)12209(Top 100%)12209(Top 223%)
40K24.85 mi0.85 mi23634-5769636-3149636-31428215(Top 99%)12173(Top 100%)12173(Top 223%)
25.2M25.20 mi0.35 mi23804-1709728-929728-9228188(Top 99%)12172(Top 100%)12172(Top 223%)
Finish26.22 mi1.02 mi24174-3709928-2009928-20028024(Top 99%)12100(Top 99%)12100(Top 221%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

13839

Females

3925

F18-39

3925

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

15037

Females

4566

F18-39

4566

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

13839

Females

3925

F18-39

3925

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

13166

Females

3641

F18-39

3641

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12654

Females

3338

F18-39

3338

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15837

Females

5225

F18-39

5225

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22109

Females

8825

F18-39

8825

30K→20M

18.6 - 20.0 mi

Top 100%
×5stories
+64ft-50ft

Overall

28266

Females

12176

F18-39

12176

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

23290

Females

9652

F18-39

9652

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

25481

Females

10835

F18-39

10835

35K→23M

21.8 - 23.0 mi

Top 100%
×5stories
+23ft-63ft

Overall

28332

Females

12210

F18-39

12210

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

28342

Females

12209

F18-39

12209

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

28215

Females

12173

F18-39

12173

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

28188

Females

12172

F18-39

12172

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2stories
+22ft-21ft

Overall

28024

Females

12100

F18-39

12100

Passing Analysis

Category:
Athletes Passed
1804
Passed By
10354
Net Change
-8550
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15624
5K → 10K492180+312#15624#15312
10K → 15K55531+524#15312#14788
15K → 20K49231+461#14788#14327
20K → Half932+91#14327#14236
Half → 25K102368-266#14236#14502
25K → 30K152075-2060#14502#16562
30K → 20M23117-3115#16562#19677
20M → 21M26368-342#19677#20019
21M → 35K14399-385#20019#20404
35K → 23M51740-1735#20404#22139
23M → 24M3922-919#22139#23058
24M → 40K1577-576#23058#23634
40K → 25.2M1171-170#23634#23804
25.2M → Finish3373-370#23804#24174
TOTALS180410354-8550
📊

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