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BOSTON MARATHON 2025

Lauren Couls

Bib: 13937•F

MI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Division (F18-39)
#0 / 5469
Top 49%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:25/mi
23:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:34/mi
46:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:10:22
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:35:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:40:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:00:11
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:26:15
↑ 181↓ 1480.2%
20M
8:27/mi
2:37:44
↑ 64↓ 500.2%
21M
8:46/mi
2:46:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:52:22
↑ 17↓ 861.7%
23M
8:23/mi
3:02:52
↑ 23↓ 630.6%
24M
8:22/mi
3:11:14
↓ 821.3%
40K· 24.85 mi
8:28/mi
3:18:28
↓ 200.3%
25.2M
9:08/mi
3:21:37
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:29:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:35
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:48:51
Pace8:18 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2423:047:2523:04
7:25
-
10K
6.21 mi11:15:5646:367:3023:32
7:34
+0:09
15K
9.32 mi11:39:421:10:227:3323:46
7:39
+0:05
20K
12.43 mi12:04:311:35:117:4024:49
7:59
+0:20
Half
13.11 mi12:09:551:40:357:405:24
7:55
-0:04
25K
15.53 mi12:29:312:00:117:4419:36
8:05
+0:10
30K
18.64 mi12:55:352:26:157:5126:04
8:23
+0:18
20M
20.00 mi13:07:042:37:447:5311:29
8:27
+0:04
21M
21.00 mi13:15:502:46:307:568:46
8:46
+0:19
35K
21.75 mi13:21:422:52:227:565:52
7:51
-0:55
23M
23.00 mi13:32:123:02:527:5710:30
8:23
+0:32
24M
24.00 mi13:40:343:11:147:588:22
8:22
-0:01
40K
24.85 mi13:47:483:18:287:597:14
8:28
+0:06
25.2M
25.20 mi13:50:573:21:378:003:09
9:08
+0:40
Finish
26.22 mi13:58:463:29:268:007:49
7:40
-1:28

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

7:25 /mi

Average Pace

8:00 /mi

Slowest Pace

9:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:03

40% of race

Time at Steady Pace

49:49

24% of race

Time at Slower Pace

1:15:34

36% of race

Average Pace: 7:59 /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 mi10:52:2423:047:2523:04
7:25
#11594
10K
6.21 mi11:15:5646:367:3023:32
7:34
#12137
15K
9.32 mi11:39:421:10:227:3323:46
7:39
#12429
20K
12.43 mi12:04:311:35:117:4024:49
7:59
#13003
Half
13.11 mi12:09:551:40:357:405:24
7:55
#13134
25K
15.53 mi12:29:312:00:117:4419:36
8:05
#13325
30K
18.64 mi12:55:352:26:157:5126:04
8:23
#13449
20M
20.00 mi13:07:042:37:447:5311:29
8:27
#13425
21M
21.00 mi13:15:502:46:307:568:46
8:46
#13306
35K
21.75 mi13:21:422:52:227:565:52
7:51
#13215
23M
23.00 mi13:32:123:02:527:5710:30
8:23
#13164
24M
24.00 mi13:40:343:11:147:588:22
8:22
#13170
40K
24.85 mi13:47:483:18:287:597:14
8:28
#13158
25.2M
25.20 mi13:50:573:21:378:003:09
9:08
#13149
Finish
26.22 mi13:58:463:29:268:007:49
7:40
#13061
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi115942577257713066(Top 46%)3485(Top 29%)3485(Top 64%)
10K6.21 mi3.10 mi12137-5432882-3052882-30512810(Top 45%)3259(Top 27%)3259(Top 60%)
15K9.32 mi3.11 mi12429-2923067-1853067-18513066(Top 46%)3485(Top 29%)3485(Top 64%)
20K12.43 mi3.11 mi13003-5743448-3813448-38114838(Top 52%)4551(Top 37%)4551(Top 83%)
Half13.11 mi0.68 mi13134-1313520-723520-7215228(Top 54%)4725(Top 39%)4725(Top 86%)
25K15.53 mi2.42 mi13325-1913666-1463666-14614529(Top 51%)4494(Top 37%)4494(Top 82%)
30K18.64 mi3.11 mi13449-1243785-1193785-11914080(Top 50%)4416(Top 36%)4416(Top 81%)
20M20.00 mi1.36 mi13425+243816-313816-3113484(Top 47%)4235(Top 35%)4235(Top 77%)
21M21.00 mi1.00 mi13306+1193779+373779+3712118(Top 43%)3663(Top 30%)3663(Top 67%)
35K21.75 mi0.75 mi13215+913749+303749+3011188(Top 39%)3214(Top 26%)3214(Top 59%)
23M23.00 mi1.25 mi13164+513767-183767-1812603(Top 44%)4052(Top 33%)4052(Top 74%)
24M24.00 mi1.00 mi13170-63802-353802-3513671(Top 48%)4645(Top 38%)4645(Top 85%)
40K24.85 mi0.85 mi13158+123817-153817-1513194(Top 46%)4539(Top 37%)4539(Top 83%)
25.2M25.20 mi0.35 mi13149+93822-53822-512608(Top 44%)4287(Top 35%)4287(Top 78%)
Finish26.22 mi1.02 mi13061+883794+283794+2810517(Top 37%)3232(Top 26%)3232(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13066

Females

3485

F18-39

3485

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12810

Females

3259

F18-39

3259

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13066

Females

3485

F18-39

3485

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14838

Females

4551

F18-39

4551

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15228

Females

4725

F18-39

4725

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14529

Females

4494

F18-39

4494

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14080

Females

4416

F18-39

4416

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13484

Females

4235

F18-39

4235

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12118

Females

3663

F18-39

3663

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11188

Females

3214

F18-39

3214

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12603

Females

4052

F18-39

4052

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13671

Females

4645

F18-39

4645

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13194

Females

4539

F18-39

4539

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12608

Females

4287

F18-39

4287

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

10517

Females

3232

F18-39

3232

Passing Analysis

Category:
Athletes Passed
1413
Passed By
2880
Net Change
-1467
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11594
5K → 10K83626-543#11594#12137
10K → 15K104396-292#12137#12429
15K → 20K74648-574#12429#13003
20K → Half9140-131#13003#13134
Half → 25K114305-191#13134#13325
25K → 30K197321-124#13325#13449
30K → 20M132108+24#13449#13425
20M → 21M15940+119#13425#13306
21M → 35K10514+91#13306#13215
35K → 23M14089+51#13215#13164
23M → 24M7177-6#13164#13170
24M → 40K7967+12#13170#13158
40K → 25.2M3526+9#13158#13149
25.2M → Finish11123+88#13149#13061
TOTALS14132880-1467
📊

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