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BOSTON MARATHON 2025

Laura Collins

Bib: 16137•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 42%
Gender (Female)
#0 / 12228
Top 26%
Division (F18-39)
#0 / 5469
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:24
Rank: #12534
Start → 5K
23:24 | 7:32/mi
10K· 6.21 mi
46:54
Rank: #12562 (-28)
5K → 10K
23:30 | 7:34/mi
15K· 9.32 mi
1:10:40
Rank: #12709 (-147)
10K → 15K
23:46 | 7:39/mi
20K· 12.43 mi
1:34:33
Rank: #12553 (+156)
15K → 20K
23:53 | 7:41/mi
Half· 13.11 mi
1:39:42
Rank: #12544 (+9)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:58:25
Rank: #12383 (+161)
Half → 25K
18:43 | 7:43/mi
30K· 18.64 mi
2:23:23
Rank: #12197 (+186)
25K → 30K
24:58 | 8:02/mi
20M
2:34:32
Rank: #12123 (+74)
30K → 20M
11:09 | 8:12/mi
21M
2:43:25
Rank: #12142 (-19)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:49:29
Rank: #12172 (-30)
21M → 35K
6:04 | 8:07/mi
23M
2:59:42
Rank: #12067 (+105)
35K → 23M
10:13 | 8:10/mi
24M
3:07:41
Rank: #12007 (+60)
23M → 24M
7:59 | 7:59/mi
40K· 24.85 mi
3:14:28
Rank: #11893 (+114)
24M → 40K
6:47 | 7:56/mi
25.2M
3:17:37
Rank: #11903 (-10)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:25:36
Rank: #11870 (+33)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:42
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:45:54
Pace8:05 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:0923:247:3223:24
7:32
-
10K
6.21 mi11:20:3946:547:3323:30
7:34
+0:02
15K
9.32 mi11:44:251:10:407:3523:46
7:39
+0:05
20K
12.43 mi12:08:181:34:337:3623:53
7:41
+0:02
Half
13.11 mi12:13:271:39:427:365:09
7:33
-0:08
25K
15.53 mi12:32:101:58:257:3718:43
7:43
+0:10
30K
18.64 mi12:57:082:23:237:4224:58
8:02
+0:19
20M
20.00 mi13:08:172:34:327:4411:09
8:12
+0:10
21M
21.00 mi13:17:102:43:257:478:53
8:53
+0:41
35K
21.75 mi13:23:142:49:297:486:04
8:07
-0:46
23M
23.00 mi13:33:272:59:427:4910:13
8:10
+0:03
24M
24.00 mi13:41:263:07:417:497:59
7:59
-0:11
40K
24.85 mi13:48:133:14:287:496:47
7:56
-0:03
25.2M
25.20 mi13:51:223:17:377:513:09
9:08
+1:12
Finish
26.22 mi13:59:213:25:367:517:59
7:50
-1:18

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

7:32 /mi

Average Pace

7:51 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:42

48% of race

Time at Steady Pace

1:12:30

35% of race

Time at Slower Pace

33:24

16% of race

Average Pace: 7:50 /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 mi10:57:0923:247:3223:24
7:32
#12534
10K
6.21 mi11:20:3946:547:3323:30
7:34
#12562
15K
9.32 mi11:44:251:10:407:3523:46
7:39
#12709
20K
12.43 mi12:08:181:34:337:3623:53
7:41
#12553
Half
13.11 mi12:13:271:39:427:365:09
7:33
#12544
25K
15.53 mi12:32:101:58:257:3718:43
7:43
#12383
30K
18.64 mi12:57:082:23:237:4224:58
8:02
#12197
20M
20.00 mi13:08:172:34:327:4411:09
8:12
#12123
21M
21.00 mi13:17:102:43:257:478:53
8:53
#12142
35K
21.75 mi13:23:142:49:297:486:04
8:07
#12172
23M
23.00 mi13:33:272:59:427:4910:13
8:10
#12067
24M
24.00 mi13:41:263:07:417:497:59
7:59
#12007
40K
24.85 mi13:48:133:14:287:496:47
7:56
#11893
25.2M
25.20 mi13:51:223:17:377:513:09
9:08
#11903
Finish
26.22 mi13:59:213:25:367:517:59
7:50
#11870
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125343081308113061(Top 46%)3480(Top 28%)3480(Top 64%)
10K6.21 mi3.10 mi12562-283107-263107-2612705(Top 45%)3201(Top 26%)3201(Top 59%)
15K9.32 mi3.11 mi12709-1473210-1033210-10313061(Top 46%)3480(Top 28%)3480(Top 64%)
20K12.43 mi3.11 mi12553+1563175+353175+3512304(Top 43%)3171(Top 26%)3171(Top 58%)
Half13.11 mi0.68 mi12544+93174+13174+112202(Top 43%)3063(Top 25%)3063(Top 56%)
25K15.53 mi2.42 mi12383+1613126+483126+4811723(Top 41%)2982(Top 24%)2982(Top 55%)
30K18.64 mi3.11 mi12197+1863096+303096+3011654(Top 41%)3119(Top 26%)3119(Top 57%)
20M20.00 mi1.36 mi12123+743098-23098-211851(Top 42%)3369(Top 28%)3369(Top 62%)
21M21.00 mi1.00 mi12142-193150-523150-5212837(Top 45%)4034(Top 33%)4034(Top 74%)
35K21.75 mi0.75 mi12172-303193-433193-4313006(Top 46%)4154(Top 34%)4154(Top 76%)
23M23.00 mi1.25 mi12067+1053169+243169+2411138(Top 39%)3295(Top 27%)3295(Top 60%)
24M24.00 mi1.00 mi12007+603179-103179-1011143(Top 39%)3375(Top 28%)3375(Top 62%)
40K24.85 mi0.85 mi11893+1143157+223157+229746(Top 34%)2805(Top 23%)2805(Top 51%)
25.2M25.20 mi0.35 mi11903-103175-183175-1812588(Top 44%)4267(Top 35%)4267(Top 78%)
Finish26.22 mi1.02 mi11870+333188-133188-1311701(Top 41%)3792(Top 31%)3792(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21stories
+97ft-345ft

Overall

13061

Females

3480

F18-39

3480

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12705

Females

3201

F18-39

3201

10K→15K

6.2 - 9.3 mi

Top 46%
×3stories
+67ft-78ft

Overall

13061

Females

3480

F18-39

3480

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

12304

Females

3171

F18-39

3171

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

12202

Females

3063

F18-39

3063

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

11723

Females

2982

F18-39

2982

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11654

Females

3119

F18-39

3119

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

11851

Females

3369

F18-39

3369

20M→21M

20.0 - 21.0 mi

Top 45%
×8stories
+106ft-24ft

Overall

12837

Females

4034

F18-39

4034

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

13006

Females

4154

F18-39

4154

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

11138

Females

3295

F18-39

3295

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

11143

Females

3375

F18-39

3375

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9746

Females

2805

F18-39

2805

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12588

Females

4267

F18-39

4267

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

11701

Females

3792

F18-39

3792

Passing Analysis

Category:
Athletes Passed
2089
Passed By
1425
Net Change
+664
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12534
5K → 10K268296-28#12534#12562
10K → 15K132279-147#12562#12709
15K → 20K270114+156#12709#12553
20K → Half3526+9#12553#12544
Half → 25K23473+161#12544#12383
25K → 30K324138+186#12383#12197
30K → 20M15379+74#12197#12123
20M → 21M99118-19#12123#12142
21M → 35K5383-30#12142#12172
35K → 23M15853+105#12172#12067
23M → 24M10343+60#12067#12007
24M → 40K14329+114#12007#11893
40K → 25.2M2939-10#11893#11903
25.2M → Finish8855+33#11903#11870
TOTALS20891425+664
📊

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