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BOSTON MARATHON 2025

Rob Grosvenor

Bib: 7335•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 35%
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
22:19
Rank: #9304
Start → 5K
22:19 | 7:11/mi
10K· 6.21 mi
44:08
Rank: #8648 (+656)
5K → 10K
21:49 | 7:01/mi
15K· 9.32 mi
1:06:05
Rank: #8401 (+247)
10K → 15K
21:57 | 7:04/mi
20K· 12.43 mi
1:28:02
Rank: #8056 (+345)
15K → 20K
21:57 | 7:04/mi
Half· 13.11 mi
1:32:44
Rank: #7984 (+72)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:49:58
Rank: #7775 (+209)
Half → 25K
17:14 | 7:06/mi
30K· 18.64 mi
2:12:33
Rank: #7421 (+354)
25K → 30K
22:35 | 7:16/mi
20M
2:22:29
Rank: #7220 (+201)
30K → 20M
9:56 | 7:19/mi
21M
2:30:06
Rank: #7041 (+179)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:35:25
Rank: #6972 (+69)
21M → 35K
5:19 | 7:06/mi
23M
2:44:42
Rank: #6836 (+136)
35K → 23M
9:17 | 7:25/mi
24M
2:52:05
Rank: #6777 (+59)
23M → 24M
7:23 | 7:23/mi
40K· 24.85 mi
2:58:24
Rank: #6693 (+84)
24M → 40K
6:19 | 7:23/mi
25.2M
3:01:08
Rank: #6658 (+35)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:07:48
Rank: #6425 (+233)
25.2M → Finish
6:40 | 6:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:44
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:35:04
Pace7:15 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1922:197:1122:19
7:11
-
10K
6.21 mi11:11:0844:087:0621:49
7:01
-0:10
15K
9.32 mi11:33:051:06:057:0521:57
7:04
+0:03
20K
12.43 mi11:55:021:28:027:0521:57
7:04
0:00
Half
13.11 mi11:59:441:32:447:044:42
6:53
-0:11
25K
15.53 mi12:16:581:49:587:0517:14
7:06
+0:13
30K
18.64 mi12:39:332:12:337:0722:35
7:16
+0:10
20M
20.00 mi12:49:292:22:297:079:56
7:19
+0:03
21M
21.00 mi12:57:062:30:067:097:37
7:37
+0:18
35K
21.75 mi13:02:252:35:257:095:19
7:06
-0:31
23M
23.00 mi13:11:422:44:427:109:17
7:25
+0:19
24M
24.00 mi13:19:052:52:057:107:23
7:23
-0:02
40K
24.85 mi13:25:242:58:247:116:19
7:23
0:00
25.2M
25.20 mi13:28:083:01:087:112:44
7:56
+0:33
Finish
26.22 mi13:34:483:07:487:106:40
6:33
-1:23

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

7:10 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:11

18% of race

Time at Steady Pace

2:01:17

65% of race

Time at Slower Pace

33:20

18% of race

Average Pace: 7:10 /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 mi10:49:1922:197:1122:19
7:11
#9304
10K
6.21 mi11:11:0844:087:0621:49
7:01
#8648
15K
9.32 mi11:33:051:06:057:0521:57
7:04
#8401
20K
12.43 mi11:55:021:28:027:0521:57
7:04
#8056
Half
13.11 mi11:59:441:32:447:044:42
6:53
#7984
25K
15.53 mi12:16:581:49:587:0517:14
7:06
#7775
30K
18.64 mi12:39:332:12:337:0722:35
7:16
#7421
20M
20.00 mi12:49:292:22:297:079:56
7:19
#7220
21M
21.00 mi12:57:062:30:067:097:37
7:37
#7041
35K
21.75 mi13:02:252:35:257:095:19
7:06
#6972
23M
23.00 mi13:11:422:44:427:109:17
7:25
#6836
24M
24.00 mi13:19:052:52:057:107:23
7:23
#6777
40K
24.85 mi13:25:242:58:247:116:19
7:23
#6693
25.2M
25.20 mi13:28:083:01:087:112:44
7:56
#6658
Finish
26.22 mi13:34:483:07:487:106:40
6:33
#6425
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9304776677668061(Top 28%)6981(Top 43%)6981(Top 124%)
10K6.21 mi3.10 mi8648+6567385+3817385+3818064(Top 28%)7006(Top 44%)7006(Top 124%)
15K9.32 mi3.11 mi8401+2477221+1647221+1648061(Top 28%)6981(Top 43%)6981(Top 124%)
20K12.43 mi3.11 mi8056+3456991+2306991+2307274(Top 26%)6395(Top 40%)6395(Top 113%)
Half13.11 mi0.68 mi7984+726941+506941+506772(Top 24%)6037(Top 37%)6037(Top 107%)
25K15.53 mi2.42 mi7775+2096789+1526789+1527005(Top 25%)6118(Top 38%)6118(Top 108%)
30K18.64 mi3.11 mi7421+3546510+2796510+2796270(Top 22%)5499(Top 34%)5499(Top 97%)
20M20.00 mi1.36 mi7220+2016334+1766334+1765837(Top 21%)5080(Top 32%)5080(Top 90%)
21M21.00 mi1.00 mi7041+1796181+1536181+1535209(Top 18%)4530(Top 28%)4530(Top 80%)
35K21.75 mi0.75 mi6972+696120+616120+615997(Top 21%)5054(Top 31%)5054(Top 90%)
23M23.00 mi1.25 mi6836+1365982+1385982+1386120(Top 22%)5036(Top 31%)5036(Top 89%)
24M24.00 mi1.00 mi6777+595914+685914+686908(Top 24%)5461(Top 34%)5461(Top 97%)
40K24.85 mi0.85 mi6693+845830+845830+846109(Top 22%)4909(Top 30%)4909(Top 87%)
25.2M25.20 mi0.35 mi6658+355791+395791+395520(Top 19%)4438(Top 28%)4438(Top 79%)
Finish26.22 mi1.02 mi6425+2335611+1805611+1803023(Top 11%)2691(Top 17%)2691(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8061

Males

6981

M18-39

6981

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

8064

Males

7006

M18-39

7006

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8061

Males

6981

M18-39

6981

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7274

Males

6395

M18-39

6395

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6772

Males

6037

M18-39

6037

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

7005

Males

6118

M18-39

6118

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6270

Males

5499

M18-39

5499

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5837

Males

5080

M18-39

5080

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5209

Males

4530

M18-39

4530

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5997

Males

5054

M18-39

5054

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6120

Males

5036

M18-39

5036

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6908

Males

5461

M18-39

5461

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6109

Males

4909

M18-39

4909

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5520

Males

4438

M18-39

4438

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3023

Males

2691

M18-39

2691

Passing Analysis

Category:
Athletes Passed
3198
Passed By
319
Net Change
+2879
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9304
5K → 10K69337+656#9304#8648
10K → 15K29750+247#8648#8401
15K → 20K36722+345#8401#8056
20K → Half764+72#8056#7984
Half → 25K23728+209#7984#7775
25K → 30K37925+354#7775#7421
30K → 20M21110+201#7421#7220
20M → 21M19516+179#7220#7041
21M → 35K8516+69#7041#6972
35K → 23M16327+136#6972#6836
23M → 24M10142+59#6836#6777
24M → 40K11228+84#6777#6693
40K → 25.2M4510+35#6693#6658
25.2M → Finish2374+233#6658#6425
TOTALS3198319+2879
📊

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