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BOSTON MARATHON 2025

Britany Carlson

Bib: 15577•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 27%
Division (F18-39)
#0 / 5469
Top 45%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:08
Rank: #8860
Start → 5K
22:08 | 7:07/mi
10K· 6.21 mi
44:20
Rank: #8917 (-57)
5K → 10K
22:12 | 7:09/mi
15K· 9.32 mi
1:06:32
Rank: #8824 (+93)
10K → 15K
22:12 | 7:09/mi
20K· 12.43 mi
1:29:22
Rank: #8909 (-85)
15K → 20K
22:50 | 7:21/mi
Half· 13.11 mi
1:34:18
Rank: #8927 (-18)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:38
Rank: #9142 (-215)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:18:03
Rank: #9755 (-613)
25K → 30K
25:25 | 8:11/mi
20M
2:29:51
Rank: #10181 (-426)
30K → 20M
11:48 | 8:41/mi
21M
2:38:55
Rank: #10414 (-233)
20M → 21M
9:04 | 9:04/mi
35K· 21.75 mi
2:45:02
Rank: #10513 (-99)
21M → 35K
6:07 | 8:11/mi
23M
2:57:32
Rank: #11296 (-783)
35K → 23M
12:30 | 9:59/mi
24M
3:06:15
Rank: #11505 (-209)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:13:59
Rank: #11729 (-224)
24M → 40K
7:44 | 9:03/mi
25.2M
3:17:50
Rank: #11963 (-234)
40K → 25.2M
3:51 | 11:10/mi
Finish· 26.22 mi
3:26:33
Rank: #12146 (-183)
25.2M → Finish
8:43 | 8:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:18
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:52:15
Pace8:34 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4722:087:0722:08
7:07
-
10K
6.21 mi11:15:5944:207:0822:12
7:09
+0:02
15K
9.32 mi11:38:111:06:327:0822:12
7:09
0:00
20K
12.43 mi12:01:011:29:227:1122:50
7:21
+0:12
Half
13.11 mi12:05:571:34:187:124:56
7:14
-0:07
25K
15.53 mi12:24:171:52:387:1518:20
7:34
+0:20
30K
18.64 mi12:49:422:18:037:2425:25
8:11
+0:37
20M
20.00 mi13:01:302:29:517:3011:48
8:41
+0:30
21M
21.00 mi13:10:342:38:557:349:04
9:04
+0:23
35K
21.75 mi13:16:412:45:027:356:07
8:11
-0:53
23M
23.00 mi13:29:112:57:327:4312:30
9:59
+1:48
24M
24.00 mi13:37:543:06:157:468:43
8:43
-1:16
40K
24.85 mi13:45:383:13:597:487:44
9:03
+0:20
25.2M
25.20 mi13:49:293:17:507:513:51
11:10
+2:07
Finish
26.22 mi13:58:123:26:337:538:43
8:33
-2:37

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

7:07 /mi

Average Pace

7:53 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:38

55% of race

Time at Steady Pace

1:00:46

29% of race

Time at Slower Pace

33:09

16% of race

Average Pace: 7:53 /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 mi10:53:4722:087:0722:08
7:07
#8860
10K
6.21 mi11:15:5944:207:0822:12
7:09
#8917
15K
9.32 mi11:38:111:06:327:0822:12
7:09
#8824
20K
12.43 mi12:01:011:29:227:1122:50
7:21
#8909
Half
13.11 mi12:05:571:34:187:124:56
7:14
#8927
25K
15.53 mi12:24:171:52:387:1518:20
7:34
#9142
30K
18.64 mi12:49:422:18:037:2425:25
8:11
#9755
20M
20.00 mi13:01:302:29:517:3011:48
8:41
#10181
21M
21.00 mi13:10:342:38:557:349:04
9:04
#10414
35K
21.75 mi13:16:412:45:027:356:07
8:11
#10513
23M
23.00 mi13:29:112:57:327:4312:30
9:59
#11296
24M
24.00 mi13:37:543:06:157:468:43
8:43
#11505
40K
24.85 mi13:45:383:13:597:487:44
9:03
#11729
25.2M
25.20 mi13:49:293:17:507:513:51
11:10
#11963
Finish
26.22 mi13:58:123:26:337:538:43
8:33
#12146
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8860131813188687(Top 31%)1304(Top 11%)1304(Top 24%)
10K6.21 mi3.10 mi8917-571355-371355-379057(Top 32%)1402(Top 11%)1402(Top 26%)
15K9.32 mi3.11 mi8824+931322+331322+338687(Top 31%)1304(Top 11%)1304(Top 24%)
20K12.43 mi3.11 mi8909-851379-571379-579478(Top 33%)1731(Top 14%)1731(Top 32%)
Half13.11 mi0.68 mi8927-181388-91388-99486(Top 33%)1729(Top 14%)1729(Top 32%)
25K15.53 mi2.42 mi9142-2151516-1281516-12810463(Top 37%)2315(Top 19%)2315(Top 42%)
30K18.64 mi3.11 mi9755-6131851-3351851-33512689(Top 45%)3657(Top 30%)3657(Top 67%)
20M20.00 mi1.36 mi10181-4262075-2242075-22414948(Top 53%)5007(Top 41%)5007(Top 92%)
21M21.00 mi1.00 mi10414-2332247-1722247-17213902(Top 49%)4571(Top 37%)4571(Top 84%)
35K21.75 mi0.75 mi10513-992316-692316-6913469(Top 47%)4400(Top 36%)4400(Top 80%)
23M23.00 mi1.25 mi11296-7832773-4572773-45720431(Top 72%)8252(Top 67%)8252(Top 151%)
24M24.00 mi1.00 mi11505-2092921-1482921-14815839(Top 56%)5829(Top 48%)5829(Top 107%)
40K24.85 mi0.85 mi11729-2243062-1413062-14116574(Top 58%)6344(Top 52%)6344(Top 116%)
25.2M25.20 mi0.35 mi11963-2343207-1453207-14521123(Top 74%)8706(Top 71%)8706(Top 159%)
Finish26.22 mi1.02 mi12146-1833320-1133320-11316572(Top 58%)6330(Top 52%)6330(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8687

Females

1304

F18-39

1304

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

9057

Females

1402

F18-39

1402

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8687

Females

1304

F18-39

1304

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9478

Females

1731

F18-39

1731

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9486

Females

1729

F18-39

1729

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10463

Females

2315

F18-39

2315

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12689

Females

3657

F18-39

3657

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14948

Females

5007

F18-39

5007

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13902

Females

4571

F18-39

4571

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13469

Females

4400

F18-39

4400

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20431

Females

8252

F18-39

8252

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15839

Females

5829

F18-39

5829

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16574

Females

6344

F18-39

6344

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

21123

Females

8706

F18-39

8706

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16572

Females

6330

F18-39

6330

Passing Analysis

Category:
Athletes Passed
983
Passed By
4267
Net Change
-3286
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8860
5K → 10K188245-57#8860#8917
10K → 15K212119+93#8917#8824
15K → 20K147232-85#8824#8909
20K → Half3250-18#8909#8927
Half → 25K95310-215#8927#9142
25K → 30K83696-613#9142#9755
30K → 20M40464-426#9755#10181
20M → 21M51284-233#10181#10414
21M → 35K29128-99#10414#10513
35K → 23M9792-783#10513#11296
23M → 24M38247-209#11296#11505
24M → 40K31255-224#11505#11729
40K → 25.2M2236-234#11729#11963
25.2M → Finish26209-183#11963#12146
TOTALS9834267-3286
📊

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