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BOSTON MARATHON 2025

Brian Grossman

Bib: 32441•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:16
Rank: #17586
Start → 5K
25:16 | 8:08/mi
10K· 6.21 mi
49:59
Rank: #16868 (+718)
5K → 10K
24:43 | 7:57/mi
15K· 9.32 mi
1:14:41
Rank: #16428 (+440)
10K → 15K
24:42 | 7:57/mi
20K· 12.43 mi
1:40:32
Rank: #16601 (-173)
15K → 20K
25:51 | 8:19/mi
Half· 13.11 mi
1:46:04
Rank: #16593 (+8)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
2:06:49
Rank: #16731 (-138)
Half → 25K
20:45 | 8:33/mi
30K· 18.64 mi
2:38:01
Rank: #17946 (-1215)
25K → 30K
31:12 | 10:03/mi
20M
2:51:54
Rank: #18403 (-457)
30K → 20M
13:53 | 10:13/mi
21M
3:03:34
Rank: #18851 (-448)
20M → 21M
11:40 | 11:40/mi
35K· 21.75 mi
3:10:56
Rank: #18991 (-140)
21M → 35K
7:22 | 9:51/mi
23M
3:23:35
Rank: #19154 (-163)
35K → 23M
12:39 | 10:06/mi
24M
3:35:04
Rank: #19602 (-448)
23M → 24M
11:29 | 11:29/mi
40K· 24.85 mi
3:42:49
Rank: #19491 (+111)
24M → 40K
7:45 | 9:04/mi
25.2M
3:46:31
Rank: #19496 (-5)
40K → 25.2M
3:42 | 10:44/mi
Finish· 26.22 mi
3:55:20
Rank: #19409 (+87)
25.2M → Finish
8:49 | 8:39/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:04
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time2:09:16
Pace9:52 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3825:168:0825:16
8:08
-
10K
6.21 mi12:15:2149:598:0324:43
7:57
-0:11
15K
9.32 mi12:40:031:14:418:0124:42
7:57
0:00
20K
12.43 mi13:05:541:40:328:0525:51
8:19
+0:22
Half
13.11 mi13:11:261:46:048:055:32
8:07
-0:12
25K
15.53 mi13:32:112:06:498:1020:45
8:33
+0:26
30K
18.64 mi14:03:232:38:018:2931:12
10:03
+1:30
20M
20.00 mi14:17:162:51:548:3613:53
10:13
+0:10
21M
21.00 mi14:28:563:03:348:4411:40
11:40
+1:27
35K
21.75 mi14:36:183:10:568:477:22
9:51
-1:49
23M
23.00 mi14:48:573:23:358:5112:39
10:06
+0:15
24M
24.00 mi15:00:263:35:048:5811:29
11:29
+1:23
40K
24.85 mi15:08:113:42:498:587:45
9:04
-2:25
25.2M
25.20 mi15:11:533:46:318:593:42
10:44
+1:40
Finish
26.22 mi15:20:423:55:208:598:49
8:39
-2:05

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

7:57 /mi

Average Pace

8:59 /mi

Slowest Pace

11:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:04

45% of race

Time at Steady Pace

37:19

16% of race

Time at Slower Pace

1:31:57

39% of race

Average Pace: 8:59 /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 mi11:50:3825:168:0825:16
8:08
#17586
10K
6.21 mi12:15:2149:598:0324:43
7:57
#16868
15K
9.32 mi12:40:031:14:418:0124:42
7:57
#16428
20K
12.43 mi13:05:541:40:328:0525:51
8:19
#16601
Half
13.11 mi13:11:261:46:048:055:32
8:07
#16593
25K
15.53 mi13:32:112:06:498:1020:45
8:33
#16731
30K
18.64 mi14:03:232:38:018:2931:12
10:03
#17946
20M
20.00 mi14:17:162:51:548:3613:53
10:13
#18403
21M
21.00 mi14:28:563:03:348:4411:40
11:40
#18851
35K
21.75 mi14:36:183:10:568:477:22
9:51
#18991
23M
23.00 mi14:48:573:23:358:5112:39
10:06
#19154
24M
24.00 mi15:00:263:35:048:5811:29
11:29
#19602
40K
24.85 mi15:08:113:42:498:587:45
9:04
#19491
25.2M
25.20 mi15:11:533:46:318:593:42
10:44
#19496
Finish
26.22 mi15:20:423:55:208:598:49
8:39
#19409
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17586114491144915657(Top 55%)10671(Top 66%)10671(Top 189%)
10K6.21 mi3.10 mi16868+71811171+27811171+27816109(Top 57%)10881(Top 68%)10881(Top 193%)
15K9.32 mi3.11 mi16428+44010988+18310988+18315657(Top 55%)10671(Top 66%)10671(Top 189%)
20K12.43 mi3.11 mi16601-17311054-6611054-6617042(Top 60%)11200(Top 70%)11200(Top 199%)
Half13.11 mi0.68 mi16593+811047+711047+716670(Top 59%)11065(Top 69%)11065(Top 196%)
25K15.53 mi2.42 mi16731-13811082-3511082-3517525(Top 62%)11331(Top 70%)11331(Top 201%)
30K18.64 mi3.11 mi17946-121511524-44211524-44221711(Top 76%)13032(Top 81%)13032(Top 231%)
20M20.00 mi1.36 mi18403-45711708-18411708-18421603(Top 76%)12859(Top 80%)12859(Top 228%)
21M21.00 mi1.00 mi18851-44811881-17311881-17322941(Top 81%)13413(Top 83%)13413(Top 238%)
35K21.75 mi0.75 mi18991-14011922-4111922-4121446(Top 76%)12642(Top 78%)12642(Top 224%)
23M23.00 mi1.25 mi19154-16311970-4811970-4820809(Top 73%)12298(Top 76%)12298(Top 218%)
24M24.00 mi1.00 mi19602-44812121-15112121-15124860(Top 88%)14230(Top 88%)14230(Top 252%)
40K24.85 mi0.85 mi19491+11112063+5812063+5816681(Top 59%)10233(Top 64%)10233(Top 181%)
25.2M25.20 mi0.35 mi19496-512057+612057+619791(Top 70%)11689(Top 73%)11689(Top 207%)
Finish26.22 mi1.02 mi19409+8711998+5911998+5917176(Top 60%)10486(Top 65%)10486(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

15657

Males

10671

M18-39

10671

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

16109

Males

10881

M18-39

10881

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

15657

Males

10671

M18-39

10671

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

17042

Males

11200

M18-39

11200

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16670

Males

11065

M18-39

11065

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

17525

Males

11331

M18-39

11331

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

21711

Males

13032

M18-39

13032

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

21603

Males

12859

M18-39

12859

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

22941

Males

13413

M18-39

13413

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21446

Males

12642

M18-39

12642

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20809

Males

12298

M18-39

12298

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

24860

Males

14230

M18-39

14230

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16681

Males

10233

M18-39

10233

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

19791

Males

11689

M18-39

11689

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

17176

Males

10486

M18-39

10486

Passing Analysis

Category:
Athletes Passed
2013
Passed By
3836
Net Change
-1823
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17586
5K → 10K79880+718#17586#16868
10K → 15K47838+440#16868#16428
15K → 20K156329-173#16428#16601
20K → Half3628+8#16601#16593
Half → 25K114252-138#16593#16731
25K → 30K361251-1215#16731#17946
30K → 20M35492-457#17946#18403
20M → 21M22470-448#18403#18851
21M → 35K27167-140#18851#18991
35K → 23M46209-163#18991#19154
23M → 24M12460-448#19154#19602
24M → 40K1209+111#19602#19491
40K → 25.2M2732-5#19491#19496
25.2M → Finish10619+87#19496#19409
TOTALS20133836-1823
📊

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