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BOSTON MARATHON 2025

Lucy Brash

Bib: 3469•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Female)
#0 / 12228
Top 2%
Division (F18-39)
#0 / 5469
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #4745
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
41:08
Rank: #4644 (+101)
5K → 10K
20:34 | 6:37/mi
15K· 9.32 mi
1:01:45
Rank: #4576 (+68)
10K → 15K
20:37 | 6:38/mi
20K· 12.43 mi
1:22:36
Rank: #4522 (+54)
15K → 20K
20:51 | 6:43/mi
Half· 13.11 mi
1:27:05
Rank: #4498 (+24)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:43:30
Rank: #4485 (+13)
Half → 25K
16:25 | 6:46/mi
30K· 18.64 mi
2:05:06
Rank: #4398 (+87)
25K → 30K
21:36 | 6:57/mi
20M
2:14:47
Rank: #4416 (-18)
30K → 20M
9:41 | 7:08/mi
21M
2:22:11
Rank: #4362 (+54)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:27:05
Rank: #4267 (+95)
21M → 35K
4:54 | 6:33/mi
23M
2:35:51
Rank: #4197 (+70)
35K → 23M
8:46 | 7:00/mi
24M
2:42:33
Rank: #4098 (+99)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:48:31
Rank: #4076 (+22)
24M → 40K
5:58 | 6:59/mi
25.2M
2:51:10
Rank: #4064 (+12)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:58:10
Rank: #4080 (-16)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:05
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:31:05
Pace6:57 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1320:346:3720:34
6:37
-
10K
6.21 mi10:43:4741:086:3720:34
6:37
0:00
15K
9.32 mi11:04:241:01:456:3820:37
6:38
+0:01
20K
12.43 mi11:25:151:22:366:3920:51
6:43
+0:05
Half
13.11 mi11:29:441:27:056:394:29
6:34
-0:09
25K
15.53 mi11:46:091:43:306:4016:25
6:46
+0:12
30K
18.64 mi12:07:452:05:066:4321:36
6:57
+0:11
20M
20.00 mi12:17:262:14:476:449:41
7:08
+0:11
21M
21.00 mi12:24:502:22:116:467:24
7:24
+0:16
35K
21.75 mi12:29:442:27:056:464:54
6:33
-0:51
23M
23.00 mi12:38:302:35:516:478:46
7:00
+0:27
24M
24.00 mi12:45:122:42:336:466:42
6:42
-0:18
40K
24.85 mi12:51:102:48:316:475:58
6:59
+0:17
25.2M
25.20 mi12:53:492:51:106:482:39
7:41
+0:42
Finish
26.22 mi13:00:492:58:106:487:00
6:52
-0:49

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

6:33 /mi

Average Pace

6:48 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:07

94% of race

Time at Steady Pace

10:03

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:23:1320:346:3720:34
6:37
#4745
10K
6.21 mi10:43:4741:086:3720:34
6:37
#4644
15K
9.32 mi11:04:241:01:456:3820:37
6:38
#4576
20K
12.43 mi11:25:151:22:366:3920:51
6:43
#4522
Half
13.11 mi11:29:441:27:056:394:29
6:34
#4498
25K
15.53 mi11:46:091:43:306:4016:25
6:46
#4485
30K
18.64 mi12:07:452:05:066:4321:36
6:57
#4398
20M
20.00 mi12:17:262:14:476:449:41
7:08
#4416
21M
21.00 mi12:24:502:22:116:467:24
7:24
#4362
35K
21.75 mi12:29:442:27:056:464:54
6:33
#4267
23M
23.00 mi12:38:302:35:516:478:46
7:00
#4197
24M
24.00 mi12:45:122:42:336:466:42
6:42
#4098
40K
24.85 mi12:51:102:48:316:475:58
6:59
#4076
25.2M
25.20 mi12:53:492:51:106:482:39
7:41
#4064
Finish
26.22 mi13:00:492:58:106:487:00
6:52
#4080
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi47452912914527(Top 16%)280(Top 2%)280(Top 5%)
10K6.21 mi3.10 mi4644+101280+11280+114605(Top 16%)284(Top 2%)284(Top 5%)
15K9.32 mi3.11 mi4576+68277+3277+34527(Top 16%)280(Top 2%)280(Top 5%)
20K12.43 mi3.11 mi4522+542772774502(Top 16%)303(Top 2%)303(Top 6%)
Half13.11 mi0.68 mi4498+24274+3274+34094(Top 14%)250(Top 2%)250(Top 5%)
25K15.53 mi2.42 mi4485+13280-6280-64622(Top 16%)349(Top 3%)349(Top 6%)
30K18.64 mi3.11 mi4398+87279+1279+14383(Top 15%)359(Top 3%)359(Top 7%)
20M20.00 mi1.36 mi4416-18291-12291-124777(Top 17%)461(Top 4%)461(Top 8%)
21M21.00 mi1.00 mi4362+54300-9300-94076(Top 14%)390(Top 3%)390(Top 7%)
35K21.75 mi0.75 mi4267+95289+11289+112669(Top 9%)193(Top 2%)193(Top 4%)
23M23.00 mi1.25 mi4197+702892893734(Top 13%)365(Top 3%)365(Top 7%)
24M24.00 mi1.00 mi4098+99285+4285+42946(Top 10%)266(Top 2%)266(Top 5%)
40K24.85 mi0.85 mi4076+22290-5290-53714(Top 13%)443(Top 4%)443(Top 8%)
25.2M25.20 mi0.35 mi4064+12295-5295-54154(Top 15%)631(Top 5%)631(Top 12%)
Finish26.22 mi1.02 mi4080-16301-6301-64861(Top 17%)831(Top 7%)831(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4527

Females

280

F18-39

280

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4605

Females

284

F18-39

284

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4527

Females

280

F18-39

280

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4502

Females

303

F18-39

303

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4094

Females

250

F18-39

250

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4622

Females

349

F18-39

349

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4383

Females

359

F18-39

359

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4777

Females

461

F18-39

461

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4076

Females

390

F18-39

390

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2669

Females

193

F18-39

193

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3734

Females

365

F18-39

365

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2946

Females

266

F18-39

266

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3714

Females

443

F18-39

443

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4154

Females

631

F18-39

631

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4861

Females

831

F18-39

831

Passing Analysis

Category:
Athletes Passed
1421
Passed By
756
Net Change
+665
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4745
5K → 10K223122+101#4745#4644
10K → 15K14173+68#4644#4576
15K → 20K13783+54#4576#4522
20K → Half328+24#4522#4498
Half → 25K120107+13#4498#4485
25K → 30K18396+87#4485#4398
30K → 20M6179-18#4398#4416
20M → 21M9642+54#4416#4362
21M → 35K1049+95#4362#4267
35K → 23M9929+70#4267#4197
23M → 24M1067+99#4197#4098
24M → 40K4826+22#4098#4076
40K → 25.2M2513+12#4076#4064
25.2M → Finish4662-16#4064#4080
TOTALS1421756+665
📊

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