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BOSTON MARATHON 2025

Lauren Merullo

Bib: 26870•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
33:22
Rank: #27184
Start → 5K
33:22 | 10:44/mi
10K· 6.21 mi
1:08:08
Rank: #27266 (-82)
5K → 10K
34:46 | 11:11/mi
15K· 9.32 mi
1:42:43
Rank: #27102 (+164)
10K → 15K
34:35 | 11:08/mi
20K· 12.43 mi
2:19:39
Rank: #27079 (+23)
15K → 20K
36:56 | 11:53/mi
Half· 13.11 mi
2:27:06
Rank: #27048 (+31)
20K → Half
7:27 | 10:55/mi
25K· 15.53 mi
2:56:20
Rank: #26965 (+83)
Half → 25K
29:14 | 12:03/mi
30K· 18.64 mi
3:35:10
Rank: #26842 (+123)
25K → 30K
38:50 | 12:30/mi
20M
3:53:10
Rank: #26851 (-9)
30K → 20M
18:00 | 13:15/mi
21M
4:05:26
Rank: #26731 (+120)
20M → 21M
12:16 | 12:16/mi
35K· 21.75 mi
4:13:56
Rank: #26671 (+60)
21M → 35K
8:30 | 11:22/mi
23M
4:28:59
Rank: #26598 (+73)
35K → 23M
15:03 | 12:01/mi
24M
4:39:40
Rank: #26498 (+100)
23M → 24M
10:41 | 10:41/mi
40K· 24.85 mi
4:51:25
Rank: #26554 (-56)
24M → 40K
11:45 | 13:45/mi
25.2M
4:56:35
Rank: #26574 (-20)
40K → 25.2M
5:10 | 14:59/mi
Finish· 26.22 mi
5:09:11
Rank: #26605 (-31)
25.2M → Finish
12:36 | 12:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:06
Pace11:13 /mi
2nd Half
Distance13.11 mi
Time2:42:05
Pace12:22 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:1933:2210:4433:22
10:44
-
10K
6.21 mi12:30:051:08:0810:5834:46
11:11
+0:27
15K
9.32 mi13:04:401:42:4311:0134:35
11:08
-0:03
20K
12.43 mi13:41:362:19:3911:1436:56
11:53
+0:45
Half
13.11 mi13:49:032:27:0611:137:27
10:55
-0:58
25K
15.53 mi14:18:172:56:2011:2129:14
12:03
+1:08
30K
18.64 mi14:57:073:35:1011:3338:50
12:30
+0:27
20M
20.00 mi15:15:073:53:1011:3918:00
13:15
+0:45
21M
21.00 mi15:27:234:05:2611:4112:16
12:16
-0:59
35K
21.75 mi15:35:534:13:5611:418:30
11:22
-0:54
23M
23.00 mi15:50:564:28:5911:4215:03
12:01
+0:39
24M
24.00 mi16:01:374:39:4011:3910:41
10:41
-1:20
40K
24.85 mi16:13:224:51:2511:4311:45
13:45
+3:04
25.2M
25.20 mi16:18:324:56:3511:465:10
14:59
+1:14
Finish
26.22 mi16:31:085:09:1111:4812:36
12:22
-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

10:41 /mi

Average Pace

11:48 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:21

42% of race

Time at Steady Pace

2:24:55

47% of race

Time at Slower Pace

34:55

11% of race

Average Pace: 11:48 /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 mi11:55:1933:2210:4433:22
10:44
#27184
10K
6.21 mi12:30:051:08:0810:5834:46
11:11
#27266
15K
9.32 mi13:04:401:42:4311:0134:35
11:08
#27102
20K
12.43 mi13:41:362:19:3911:1436:56
11:53
#27079
Half
13.11 mi13:49:032:27:0611:137:27
10:55
#27048
25K
15.53 mi14:18:172:56:2011:2129:14
12:03
#26965
30K
18.64 mi14:57:073:35:1011:3338:50
12:30
#26842
20M
20.00 mi15:15:073:53:1011:3918:00
13:15
#26851
21M
21.00 mi15:27:234:05:2611:4112:16
12:16
#26731
35K
21.75 mi15:35:534:13:5611:418:30
11:22
#26671
23M
23.00 mi15:50:564:28:5911:4215:03
12:01
#26598
24M
24.00 mi16:01:374:39:4011:3910:41
10:41
#26498
40K
24.85 mi16:13:224:51:2511:4311:45
13:45
#26554
25.2M
25.20 mi16:18:324:56:3511:465:10
14:59
#26574
Finish
26.22 mi16:31:085:09:1111:4812:36
12:22
#26605
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27184114381143826843(Top 95%)11279(Top 92%)11279(Top 206%)
10K6.21 mi3.10 mi27266-8211514-7611514-7627291(Top 96%)11541(Top 94%)11541(Top 211%)
15K9.32 mi3.11 mi27102+16411416+9811416+9826843(Top 95%)11279(Top 92%)11279(Top 206%)
20K12.43 mi3.11 mi27079+2311419-311419-327016(Top 95%)11402(Top 93%)11402(Top 208%)
Half13.11 mi0.68 mi27048+3111404+1511404+1526395(Top 93%)11058(Top 90%)11058(Top 202%)
25K15.53 mi2.42 mi26965+8311361+4311361+4326490(Top 93%)11134(Top 91%)11134(Top 204%)
30K18.64 mi3.11 mi26842+12311307+5411307+5426179(Top 92%)11046(Top 90%)11046(Top 202%)
20M20.00 mi1.36 mi26851-911318-1111318-1126675(Top 94%)11386(Top 93%)11386(Top 208%)
21M21.00 mi1.00 mi26731+12011259+5911259+5924034(Top 85%)10053(Top 82%)10053(Top 184%)
35K21.75 mi0.75 mi26671+6011235+2411235+2424858(Top 88%)10517(Top 86%)10517(Top 192%)
23M23.00 mi1.25 mi26598+7311208+2711208+2725139(Top 89%)10676(Top 87%)10676(Top 195%)
24M24.00 mi1.00 mi26498+10011153+5511153+5523260(Top 82%)9771(Top 80%)9771(Top 179%)
40K24.85 mi0.85 mi26554-5611190-3711190-3726966(Top 95%)11626(Top 95%)11626(Top 213%)
25.2M25.20 mi0.35 mi26574-2011205-1511205-1527090(Top 95%)11706(Top 96%)11706(Top 214%)
Finish26.22 mi1.02 mi26605-3111233-2811233-2827175(Top 96%)11702(Top 96%)11702(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

26843

Females

11279

F18-39

11279

5K→10K

3.1 - 6.2 mi

Top 96%
×5stories
+79ft-138ft

Overall

27291

Females

11541

F18-39

11541

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

26843

Females

11279

F18-39

11279

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

27016

Females

11402

F18-39

11402

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

26395

Females

11058

F18-39

11058

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

26490

Females

11134

F18-39

11134

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26179

Females

11046

F18-39

11046

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

26675

Females

11386

F18-39

11386

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

24034

Females

10053

F18-39

10053

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

24858

Females

10517

F18-39

10517

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

25139

Females

10676

F18-39

10676

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23260

Females

9771

F18-39

9771

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

26966

Females

11626

F18-39

11626

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

27090

Females

11706

F18-39

11706

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

27175

Females

11702

F18-39

11702

Passing Analysis

Category:
Athletes Passed
1147
Passed By
568
Net Change
+579
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27184
5K → 10K109191-82#27184#27266
10K → 15K20137+164#27266#27102
15K → 20K11390+23#27102#27079
20K → Half376+31#27079#27048
Half → 25K10724+83#27048#26965
25K → 30K15835+123#26965#26842
30K → 20M3241-9#26842#26851
20M → 21M1233+120#26851#26731
21M → 35K633+60#26731#26671
35K → 23M829+73#26671#26598
23M → 24M1011+100#26598#26498
24M → 40K864-56#26498#26554
40K → 25.2M525-20#26554#26574
25.2M → Finish839-31#26574#26605
TOTALS1147568+579
📊

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