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BOSTON MARATHON 2025

Emily Larosa

Bib: 30546•F

MA

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
30:46
Rank: #25344
Start → 5K
9:54/mi
30:46 split
10K· 6.21 mi
1:01:28
Rank: #25163 (+181)
5K → 10K
9:53/mi
30:42 split
15K· 9.32 mi
1:33:23
Rank: #25332 (-169)
10K → 15K
10:16/mi
31:55 split
20K· 12.43 mi
2:04:43
Rank: #25098 (+234)
15K → 20K
10:05/mi
31:20 split
Half· 13.11 mi
2:11:27
Rank: #25067 (+31)
20K → Half
9:52/mi
6:44 split
25K· 15.53 mi
2:38:27
Rank: #25110 (-43)
Half → 25K
11:08/mi
27:00 split
30K· 18.64 mi
3:14:01
Rank: #25062 (+48)
25K → 30K
11:27/mi
35:34 split
20M
3:30:18
Rank: #25086 (-24)
30K → 20M
11:59/mi
16:17 split
21M
3:42:57
Rank: #25079 (+7)
20M → 21M
12:39/mi
12:39 split
35K· 21.75 mi
3:50:55
Rank: #25051 (+28)
21M → 35K
10:39/mi
7:58 split
23M
4:05:19
Rank: #25016 (+35)
35K → 23M
11:30/mi
14:24 split
24M
4:16:41
Rank: #24997 (+19)
23M → 24M
11:22/mi
11:22 split
40K· 24.85 mi
4:26:20
Rank: #24952 (+45)
24M → 40K
11:17/mi
9:39 split
25.2M
4:30:10
Rank: #24915 (+37)
40K → 25.2M
11:07/mi
3:50 split
Finish· 26.22 mi
4:39:43
Rank: #24827 (+88)
25.2M → Finish
9:22/mi
9:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:27
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time2:28:16
Pace11:19 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:5430:469:5430:46
9:54
-
10K
6.21 mi12:22:361:01:289:5430:42
9:53
-0:01
15K
9.32 mi12:54:311:33:2310:0131:55
10:16
+0:23
20K
12.43 mi13:25:512:04:4310:0231:20
10:05
-0:11
Half
13.11 mi13:32:352:11:2710:026:44
9:52
-0:13
25K
15.53 mi13:59:352:38:2710:1227:00
11:08
+1:16
30K
18.64 mi14:35:093:14:0110:2435:34
11:27
+0:19
20M
20.00 mi14:51:263:30:1810:3116:17
11:59
+0:32
21M
21.00 mi15:04:053:42:5710:3712:39
12:39
+0:40
35K
21.75 mi15:12:033:50:5510:377:58
10:39
-2:00
23M
23.00 mi15:26:274:05:1910:4014:24
11:30
+0:51
24M
24.00 mi15:37:494:16:4110:4211:22
11:22
-0:08
40K
24.85 mi15:47:284:26:2010:439:39
11:17
-0:05
25.2M
25.20 mi15:51:184:30:1010:433:50
11:07
-0:10
Finish
26.22 mi16:00:514:39:4310:419:33
9:22
-1:45

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

9:22 /mi

Average Pace

10:41 /mi

Slowest Pace

12:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:58

53% of race

Time at Steady Pace

1:41:49

36% of race

Time at Slower Pace

28:56

10% of race

Average Pace: 10:40 /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 mi11:51:5430:469:5430:46
9:54
#25344
10K
6.21 mi12:22:361:01:289:5430:42
9:53
#25163
15K
9.32 mi12:54:311:33:2310:0131:55
10:16
#25332
20K
12.43 mi13:25:512:04:4310:0231:20
10:05
#25098
Half
13.11 mi13:32:352:11:2710:026:44
9:52
#25067
25K
15.53 mi13:59:352:38:2710:1227:00
11:08
#25110
30K
18.64 mi14:35:093:14:0110:2435:34
11:27
#25062
20M
20.00 mi14:51:263:30:1810:3116:17
11:59
#25086
21M
21.00 mi15:04:053:42:5710:3712:39
12:39
#25079
35K
21.75 mi15:12:033:50:5510:377:58
10:39
#25051
23M
23.00 mi15:26:274:05:1910:4014:24
11:30
#25016
24M
24.00 mi15:37:494:16:4110:4211:22
11:22
#24997
40K
24.85 mi15:47:284:26:2010:439:39
11:17
#24952
25.2M
25.20 mi15:51:184:30:1010:433:50
11:07
#24915
Finish
26.22 mi16:00:514:39:4310:419:33
9:22
#24827
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25344103961039625539(Top 90%)10527(Top 86%)10527(Top 192%)
10K6.21 mi3.10 mi25163+18110319+7710319+7725042(Top 88%)10257(Top 84%)10257(Top 188%)
15K9.32 mi3.11 mi25332-16910406-8710406-8725539(Top 90%)10527(Top 86%)10527(Top 192%)
20K12.43 mi3.11 mi25098+23410287+11910287+11924413(Top 86%)9941(Top 81%)9941(Top 182%)
Half13.11 mi0.68 mi25067+3110274+1310274+1324521(Top 86%)10015(Top 82%)10015(Top 183%)
25K15.53 mi2.42 mi25110-4310315-4110315-4125390(Top 89%)10508(Top 86%)10508(Top 192%)
30K18.64 mi3.11 mi25062+4810313+210313+224770(Top 87%)10279(Top 84%)10279(Top 188%)
20M20.00 mi1.36 mi25086-2410336-2310336-2325225(Top 89%)10594(Top 87%)10594(Top 194%)
21M21.00 mi1.00 mi25079+710346-1010346-1024584(Top 87%)10344(Top 85%)10344(Top 189%)
35K21.75 mi0.75 mi25051+2810344+210344+223448(Top 83%)9780(Top 80%)9780(Top 179%)
23M23.00 mi1.25 mi25016+3510336+810336+824236(Top 85%)10216(Top 84%)10216(Top 187%)
24M24.00 mi1.00 mi24997+1910338-210338-224665(Top 87%)10471(Top 86%)10471(Top 191%)
40K24.85 mi0.85 mi24952+4510330+810330+823717(Top 83%)10041(Top 82%)10041(Top 184%)
25.2M25.20 mi0.35 mi24915+3710313+1710313+1720922(Top 74%)8636(Top 71%)8636(Top 158%)
Finish26.22 mi1.02 mi24827+8810278+3510278+3520641(Top 73%)8473(Top 69%)8473(Top 155%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25539

Females

10527

F18-39

10527

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

25042

Females

10257

F18-39

10257

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25539

Females

10527

F18-39

10527

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24413

Females

9941

F18-39

9941

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

24521

Females

10015

F18-39

10015

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25390

Females

10508

F18-39

10508

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24770

Females

10279

F18-39

10279

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

25225

Females

10594

F18-39

10594

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24584

Females

10344

F18-39

10344

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23448

Females

9780

F18-39

9780

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

24236

Females

10216

F18-39

10216

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24665

Females

10471

F18-39

10471

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23717

Females

10041

F18-39

10041

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20922

Females

8636

F18-39

8636

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20641

Females

8473

F18-39

8473

Passing Analysis

Category:
Athletes Passed
1339
Passed By
822
Net Change
+517
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25344
5K → 10K27796+181#25344#25163
10K → 15K91260-169#25163#25332
15K → 20K25824+234#25332#25098
20K → Half409+31#25098#25067
Half → 25K88131-43#25067#25110
25K → 30K14799+48#25110#25062
30K → 20M4771-24#25062#25086
20M → 21M5750+7#25086#25079
21M → 35K3911+28#25079#25051
35K → 23M6025+35#25051#25016
23M → 24M4122+19#25016#24997
24M → 40K6015+45#24997#24952
40K → 25.2M370+37#24952#24915
25.2M → Finish979+88#24915#24827
TOTALS1339822+517
📊

Passing Visuals

Category:
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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