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BOSTON MARATHON 2025

Brett Pierce

KY

Bib: 510 M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 0.9%
Gender (Male)
#0 / 16105
Top 1%
Division (M18-39)
#0 / 5642
Top 4%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
5:34/mi
17:18
↑ 97↓ 345
10K· 6.21 mi
5:39/mi
34:50
↑ 79↓ 138
15K· 9.32 mi
5:42/mi
52:32
↑ 67↓ 78
20K· 12.43 mi
5:45/mi
1:10:24
↑ 106↓ 86
Half· 13.11 mi
5:42/mi
1:14:17
↑ 19↓ 37
25K· 15.53 mi
5:49/mi
1:28:23
↑ 66↓ 88
30K· 18.64 mi
5:53/mi
1:46:39
↑ 181↓ 148
20M
5:55/mi
1:54:41
↑ 64↓ 50
21M
6:15/mi
2:00:56
↑ 106↓ 24
35K· 21.75 mi
5:40/mi
2:05:10
↑ 17↓ 86
23M
5:54/mi
2:12:33
↑ 23↓ 63
24M
5:43/mi
2:18:16
↓ 82
40K· 24.85 mi
5:52/mi
2:23:17
↓ 20
25.2M
6:20/mi
2:25:28
↑ 13↓ 16
Finish· 26.22 mi
5:39/mi
2:31:13
↑ 22↓ 21
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:14:175:40 /mi⚡ faster
2nd Half
1:16:565:52 /mi+3.6%
Positive split — 3.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
17:185:343.11 mi17:18
5:34
-
10K
34:505:363.10 mi17:32
5:39
+0:05
15K
52:325:383.11 mi17:42
5:42
+0:03
20K
1:10:245:403.11 mi17:52
5:45
+0:03
Half(13.11 mi)
1:14:175:400.68 mi3:53
5:42
-0:03
25K
1:28:235:412.42 mi14:06
5:49
+0:07
30K
1:46:395:433.11 mi18:16
5:53
+0:04
20M
1:54:415:441.36 mi8:02
5:55
+0:02
21M
2:00:565:461.00 mi6:15
6:15
+0:20
35K
2:05:105:450.75 mi4:14
5:40
-0:35
23M
2:12:335:461.25 mi7:23
5:54
+0:14
24M
2:18:165:461.00 mi5:43
5:43
-0:11
40K
2:23:175:460.85 mi5:01
5:52
+0:09
25.2M
2:25:285:460.35 mi2:11
6:20
+0:28
Finish(26.22 mi)
2:31:135:461.02 mi5:45
5:39
-0:41
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

5:34 /mi

Average Pace

5:46 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:22:47

94% of race

Time at Steady Pace

8:26

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:46 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi267239239377347347
10K3.10 mi300-33271-32271-32346316316
15K3.11 mi314-14285-14285-14377347347
20K3.11 mi329-15300-15300-15383354354
Half(13.11 mi)0.68 mi338-9309-9309-9400373373
25K2.42 mi345-7316-7316-7433401401
30K3.11 mi337+8309+7309+7325299299
20M1.36 mi322+15295+14295+14283261261
21M1.00 mi315+7288+7288+7304285285
35K0.75 mi298+17272+16272+16225205205
23M1.25 mi275+23251+21251+21238222222
24M1.00 mi266+9242+9242+9200182182
40K0.85 mi258+8234+8234+8244224224
25.2M0.35 mi254+4230+4230+4241222222
Finish(26.22 mi)1.02 mi250+4227+3227+3282264264

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21story building
+97ft-345ft

Overall

377

Males

347

M18-39

347

5K→10K

3.1 - 6.2 mi

Top 1%
×5story building
+79ft-138ft

Overall

346

Males

316

M18-39

316

10K→15K

6.2 - 9.3 mi

Top 1%
×3story building
+67ft-78ft

Overall

377

Males

347

M18-39

347

15K→20K

9.3 - 12.4 mi

Top 1%
×5story building
+106ft-86ft

Overall

383

Males

354

M18-39

354

20K→Half

12.4 - 13.1 mi

Top 1%
×2story building
+19ft-37ft

Overall

400

Males

373

M18-39

373

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

433

Males

401

M18-39

401

25K→30K

15.5 - 18.6 mi

Top 1%
×9story building
+181ft-148ft

Overall

325

Males

299

M18-39

299

30K→20M

18.6 - 20.0 mi

Top 1.0%
×5story building
+64ft-50ft

Overall

283

Males

261

M18-39

261

20M→21M

20.0 - 21.0 mi

Top 1%
×8story building
+106ft-24ft

Overall

304

Males

285

M18-39

285

21M→35K

21.0 - 21.8 mi

Top 0.8%
×7story building
+17ft-86ft

Overall

225

Males

205

M18-39

205

35K→23M

21.8 - 23.0 mi

Top 0.8%
×5story building
+23ft-63ft

Overall

238

Males

222

M18-39

222

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6story building
+12ft-82ft

Overall

200

Males

182

M18-39

182

24M→40K

24.0 - 24.9 mi

Top 0.9%
×1story
+6ft-20ft

Overall

244

Males

224

M18-39

224

40K→25.2M

24.9 - 25.2 mi

Top 0.8%
×1story
+13ft-16ft

Overall

241

Males

222

M18-39

222

25.2M→Finish

25.2 - 26.2 mi

Top 1.0%
×2story building
+22ft-21ft

Overall

282

Males

264

M18-39

264

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#267
5K → 10K
396-33
#267 → #300
10K → 15K
239-14
#300 → #314
15K → 20K
238-15
#314 → #329
20K → Half
90-9
#329 → #338
Half → 25K
1710-7
#338 → #345
25K → 30K
1018+8
#345 → #337
30K → 20M
015+15
#337 → #322
20M → 21M
18+7
#322 → #315
21M → 35K
017+17
#315 → #298
35K → 23M
023+23
#298 → #275
23M → 24M
211+9
#275 → #266
24M → 40K
19+8
#266 → #258
40K → 25.2M
04+4
#258 → #254
25.2M → Finish
48+4
#254 → #250
TOTALS
129146+17
#267 → #250

Passing Visualized

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