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BOSTON MARATHON 2025

Sarah La Rosa

Bib: 28697•F

CA

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
27:37
Rank: #21955
Start → 5K
27:37 | 8:53/mi
10K· 6.21 mi
54:38
Rank: #21415 (+540)
5K → 10K
27:01 | 8:42/mi
15K· 9.32 mi
1:21:49
Rank: #21140 (+275)
10K → 15K
27:11 | 8:45/mi
20K· 12.43 mi
1:49:20
Rank: #20926 (+214)
15K → 20K
27:31 | 8:51/mi
Half· 13.11 mi
1:55:24
Rank: #20945 (-19)
20K → Half
6:04 | 8:54/mi
25K· 15.53 mi
2:17:50
Rank: #20959 (-14)
Half → 25K
22:26 | 9:15/mi
30K· 18.64 mi
2:49:10
Rank: #21217 (-258)
25K → 30K
31:20 | 10:05/mi
20M
3:03:19
Rank: #21312 (-95)
30K → 20M
14:09 | 10:25/mi
21M
3:14:18
Rank: #21328 (-16)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
3:21:47
Rank: #21366 (-38)
21M → 35K
7:29 | 10:00/mi
23M
3:35:18
Rank: #21474 (-108)
35K → 23M
13:31 | 10:48/mi
24M
3:46:01
Rank: #21573 (-99)
23M → 24M
10:43 | 10:43/mi
40K· 24.85 mi
3:55:20
Rank: #21633 (-60)
24M → 40K
9:19 | 10:54/mi
25.2M
3:59:18
Rank: #21637 (-4)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
4:08:50
Rank: #21595 (+42)
25.2M → Finish
9:32 | 9:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:24
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:13:26
Pace10:11 /mi
📊Positive Split: 15.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1027:378:5327:37
8:53
-
10K
6.21 mi12:12:1154:388:4827:01
8:42
-0:11
15K
9.32 mi12:39:221:21:498:4727:11
8:45
+0:03
20K
12.43 mi13:06:531:49:208:4827:31
8:51
+0:06
Half
13.11 mi13:12:571:55:248:486:04
8:54
+0:03
25K
15.53 mi13:35:232:17:508:5222:26
9:15
+0:21
30K
18.64 mi14:06:432:49:109:0431:20
10:05
+0:50
20M
20.00 mi14:20:523:03:199:1014:09
10:25
+0:20
21M
21.00 mi14:31:513:14:189:1510:59
10:59
+0:34
35K
21.75 mi14:39:203:21:479:177:29
10:00
-0:59
23M
23.00 mi14:52:513:35:189:2213:31
10:48
+0:48
24M
24.00 mi15:03:343:46:019:2510:43
10:43
-0:05
40K
24.85 mi15:12:533:55:209:289:19
10:54
+0:11
25.2M
25.20 mi15:16:513:59:189:303:58
11:30
+0:36
Finish
26.22 mi15:26:234:08:509:309:32
9:21
-2:09

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

8:42 /mi

Average Pace

9:30 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:22

59% of race

Time at Steady Pace

52:58

21% of race

Time at Slower Pace

48:30

19% of race

Average Pace: 9:29 /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 mi11:45:1027:378:5327:37
8:53
#21955
10K
6.21 mi12:12:1154:388:4827:01
8:42
#21415
15K
9.32 mi12:39:221:21:498:4727:11
8:45
#21140
20K
12.43 mi13:06:531:49:208:4827:31
8:51
#20926
Half
13.11 mi13:12:571:55:248:486:04
8:54
#20945
25K
15.53 mi13:35:232:17:508:5222:26
9:15
#20959
30K
18.64 mi14:06:432:49:109:0431:20
10:05
#21217
20M
20.00 mi14:20:523:03:199:1014:09
10:25
#21312
21M
21.00 mi14:31:513:14:189:1510:59
10:59
#21328
35K
21.75 mi14:39:203:21:479:177:29
10:00
#21366
23M
23.00 mi14:52:513:35:189:2213:31
10:48
#21474
24M
24.00 mi15:03:343:46:019:2510:43
10:43
#21573
40K
24.85 mi15:12:533:55:209:289:19
10:54
#21633
25.2M
25.20 mi15:16:513:59:189:303:58
11:30
#21637
Finish
26.22 mi15:26:234:08:509:309:32
9:21
#21595
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi219558601860120768(Top 73%)7869(Top 64%)7869(Top 144%)
10K6.21 mi3.10 mi21415+5408281+3208281+32020857(Top 73%)7947(Top 65%)7947(Top 145%)
15K9.32 mi3.11 mi21140+2758113+1688113+16820768(Top 73%)7869(Top 64%)7869(Top 144%)
20K12.43 mi3.11 mi20926+2147991+1227991+12220269(Top 71%)7632(Top 62%)7632(Top 140%)
Half13.11 mi0.68 mi20945-198003-128003-1221404(Top 75%)8265(Top 68%)8265(Top 151%)
25K15.53 mi2.42 mi20959-148016-138016-1320991(Top 74%)8099(Top 66%)8099(Top 148%)
30K18.64 mi3.11 mi21217-2588199-1838199-18321849(Top 77%)8697(Top 71%)8697(Top 159%)
20M20.00 mi1.36 mi21312-958277-788277-7822188(Top 78%)9003(Top 74%)9003(Top 165%)
21M21.00 mi1.00 mi21328-168297-208297-2021366(Top 75%)8632(Top 71%)8632(Top 158%)
35K21.75 mi0.75 mi21366-388330-338330-3321912(Top 77%)8998(Top 74%)8998(Top 165%)
23M23.00 mi1.25 mi21474-1088415-858415-8522745(Top 80%)9468(Top 77%)9468(Top 173%)
24M24.00 mi1.00 mi21573-998494-798494-7923366(Top 82%)9810(Top 80%)9810(Top 179%)
40K24.85 mi0.85 mi21633-608555-618555-6122912(Top 81%)9650(Top 79%)9650(Top 176%)
25.2M25.20 mi0.35 mi21637-48568-138568-1322077(Top 78%)9187(Top 75%)9187(Top 168%)
Finish26.22 mi1.02 mi21595+428555+138555+1320629(Top 73%)8461(Top 69%)8461(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

20768

Females

7869

F18-39

7869

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20857

Females

7947

F18-39

7947

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

20768

Females

7869

F18-39

7869

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20269

Females

7632

F18-39

7632

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

21404

Females

8265

F18-39

8265

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

20991

Females

8099

F18-39

8099

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21849

Females

8697

F18-39

8697

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22188

Females

9003

F18-39

9003

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21366

Females

8632

F18-39

8632

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

21912

Females

8998

F18-39

8998

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22745

Females

9468

F18-39

9468

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23366

Females

9810

F18-39

9810

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

22912

Females

9650

F18-39

9650

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22077

Females

9187

F18-39

9187

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20629

Females

8461

F18-39

8461

Passing Analysis

Category:
Athletes Passed
1976
Passed By
1616
Net Change
+360
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21955
5K → 10K62181+540#21955#21415
10K → 15K36085+275#21415#21140
15K → 20K29480+214#21140#20926
20K → Half2645-19#20926#20945
Half → 25K139153-14#20945#20959
25K → 30K136394-258#20959#21217
30K → 20M71166-95#21217#21312
20M → 21M7591-16#21312#21328
21M → 35K3472-38#21328#21366
35K → 23M63171-108#21366#21474
23M → 24M28127-99#21474#21573
24M → 40K3898-60#21573#21633
40K → 25.2M2529-4#21633#21637
25.2M → Finish6624+42#21637#21595
TOTALS19761616+360
📊

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