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BOSTON MARATHON 2025

Brittany Boisclair

Bib: 30692•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
28:45
Rank: #23403
Start → 5K
28:45 | 9:15/mi
10K· 6.21 mi
57:01
Rank: #23122 (+281)
5K → 10K
28:16 | 9:06/mi
15K· 9.32 mi
1:24:39
Rank: #22625 (+497)
10K → 15K
27:38 | 8:54/mi
20K· 12.43 mi
1:52:32
Rank: #22183 (+442)
15K → 20K
27:53 | 8:58/mi
Half· 13.11 mi
1:58:34
Rank: #22119 (+64)
20K → Half
6:02 | 8:51/mi
25K· 15.53 mi
2:20:13
Rank: #21677 (+442)
Half → 25K
21:39 | 8:56/mi
30K· 18.64 mi
2:48:32
Rank: #21067 (+610)
25K → 30K
28:19 | 9:07/mi
20M
3:00:49
Rank: #20760 (+307)
30K → 20M
12:17 | 9:02/mi
21M
3:10:08
Rank: #20452 (+308)
20M → 21M
9:19 | 9:19/mi
35K· 21.75 mi
3:16:34
Rank: #20295 (+157)
21M → 35K
6:26 | 8:36/mi
23M
3:27:38
Rank: #20054 (+241)
35K → 23M
11:04 | 8:50/mi
24M
3:36:13
Rank: #19848 (+206)
23M → 24M
8:35 | 8:35/mi
40K· 24.85 mi
3:43:41
Rank: #19687 (+161)
24M → 40K
7:28 | 8:44/mi
25.2M
3:47:01
Rank: #19612 (+75)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:55:19
Rank: #19404 (+208)
25.2M → Finish
8:18 | 8:09/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:58:34
Pace9:03 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:56:45
Pace8:54 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3928:459:1528:45
9:15
-
10K
6.21 mi12:16:5557:019:1128:16
9:06
-0:09
15K
9.32 mi12:44:331:24:399:0527:38
8:54
-0:12
20K
12.43 mi13:12:261:52:329:0327:53
8:58
+0:04
Half
13.11 mi13:18:281:58:349:036:02
8:51
-0:07
25K
15.53 mi13:40:072:20:139:0221:39
8:56
+0:05
30K
18.64 mi14:08:262:48:329:0228:19
9:07
+0:11
20M
20.00 mi14:20:433:00:499:0212:17
9:02
-0:05
21M
21.00 mi14:30:023:10:089:039:19
9:19
+0:17
35K
21.75 mi14:36:283:16:349:026:26
8:36
-0:43
23M
23.00 mi14:47:323:27:389:0211:04
8:50
+0:14
24M
24.00 mi14:56:073:36:139:018:35
8:35
-0:15
40K
24.85 mi15:03:353:43:419:007:28
8:44
+0:09
25.2M
25.20 mi15:06:553:47:019:013:20
9:40
+0:56
Finish
26.22 mi15:15:133:55:198:598:18
8:09
-1:31

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

8:09 /mi

Average Pace

8:59 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:10

41% of race

Time at Steady Pace

2:14:49

57% of race

Time at Slower Pace

3:20

1% of race

Average Pace: 8:58 /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 mi11:48:3928:459:1528:45
9:15
#23403
10K
6.21 mi12:16:5557:019:1128:16
9:06
#23122
15K
9.32 mi12:44:331:24:399:0527:38
8:54
#22625
20K
12.43 mi13:12:261:52:329:0327:53
8:58
#22183
Half
13.11 mi13:18:281:58:349:036:02
8:51
#22119
25K
15.53 mi13:40:072:20:139:0221:39
8:56
#21677
30K
18.64 mi14:08:262:48:329:0228:19
9:07
#21067
20M
20.00 mi14:20:433:00:499:0212:17
9:02
#20760
21M
21.00 mi14:30:023:10:089:039:19
9:19
#20452
35K
21.75 mi14:36:283:16:349:026:26
8:36
#20295
23M
23.00 mi14:47:323:27:389:0211:04
8:50
#20054
24M
24.00 mi14:56:073:36:139:018:35
8:35
#19848
40K
24.85 mi15:03:353:43:419:007:28
8:44
#19687
25.2M
25.20 mi15:06:553:47:019:013:20
9:40
#19612
Finish
26.22 mi15:15:133:55:198:598:18
8:09
#19404
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi234039388938821553(Top 76%)8304(Top 68%)8304(Top 152%)
10K6.21 mi3.10 mi23122+2819217+1719217+17122816(Top 80%)9028(Top 74%)9028(Top 165%)
15K9.32 mi3.11 mi22625+4978925+2928925+29221553(Top 76%)8304(Top 68%)8304(Top 152%)
20K12.43 mi3.11 mi22183+4428695+2308695+23020835(Top 73%)7964(Top 65%)7964(Top 146%)
Half13.11 mi0.68 mi22119+648662+338662+3321126(Top 74%)8097(Top 66%)8097(Top 148%)
25K15.53 mi2.42 mi21677+4428428+2348428+23419581(Top 69%)7302(Top 60%)7302(Top 134%)
30K18.64 mi3.11 mi21067+6108124+3048124+30418254(Top 64%)6720(Top 55%)6720(Top 123%)
20M20.00 mi1.36 mi20760+3077974+1507974+15017043(Top 60%)6165(Top 50%)6165(Top 113%)
21M21.00 mi1.00 mi20452+3087829+1457829+14515280(Top 54%)5344(Top 44%)5344(Top 98%)
35K21.75 mi0.75 mi20295+1577758+717758+7116122(Top 57%)5865(Top 48%)5865(Top 107%)
23M23.00 mi1.25 mi20054+2417650+1087650+10815363(Top 54%)5537(Top 45%)5537(Top 101%)
24M24.00 mi1.00 mi19848+2067563+877563+8715113(Top 53%)5454(Top 45%)5454(Top 100%)
40K24.85 mi0.85 mi19687+1617485+787485+7814862(Top 52%)5459(Top 45%)5459(Top 100%)
25.2M25.20 mi0.35 mi19612+757460+257460+2515544(Top 55%)5868(Top 48%)5868(Top 107%)
Finish26.22 mi1.02 mi19404+2087354+1067354+10613947(Top 49%)4937(Top 40%)4937(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

21553

Females

8304

F18-39

8304

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

22816

Females

9028

F18-39

9028

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

21553

Females

8304

F18-39

8304

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20835

Females

7964

F18-39

7964

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

21126

Females

8097

F18-39

8097

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19581

Females

7302

F18-39

7302

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18254

Females

6720

F18-39

6720

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

17043

Females

6165

F18-39

6165

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15280

Females

5344

F18-39

5344

21M→35K

21.0 - 21.8 mi

Top 57%
×7stories
+17ft-86ft

Overall

16122

Females

5865

F18-39

5865

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

15363

Females

5537

F18-39

5537

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

15113

Females

5454

F18-39

5454

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14862

Females

5459

F18-39

5459

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15544

Females

5868

F18-39

5868

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13947

Females

4937

F18-39

4937

Passing Analysis

Category:
Athletes Passed
4189
Passed By
190
Net Change
+3999
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23403
5K → 10K396115+281#23403#23122
10K → 15K51518+497#23122#22625
15K → 20K46018+442#22625#22183
20K → Half728+64#22183#22119
Half → 25K4475+442#22119#21677
25K → 30K62111+610#21677#21067
30K → 20M3092+307#21067#20760
20M → 21M3091+308#20760#20452
21M → 35K1592+157#20452#20295
35K → 23M2432+241#20295#20054
23M → 24M2093+206#20054#19848
24M → 40K1654+161#19848#19687
40K → 25.2M761+75#19687#19612
25.2M → Finish2080+208#19612#19404
TOTALS4189190+3999
📊

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