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BOSTON MARATHON 2023

Josh Grundmann

Bib: 32005•M

LA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:46
Rank: #21406
Start → 5K
28:46 | 9:16/mi
10K· 6.21 mi
57:00
Rank: #21320 (+86)
5K → 10K
28:14 | 9:05/mi
15K· 9.32 mi
1:25:06
Rank: #21143 (+177)
10K → 15K
28:06 | 9:03/mi
20K· 12.43 mi
1:53:46
Rank: #21009 (+134)
15K → 20K
28:40 | 9:14/mi
Half· 13.11 mi
2:00:09
Rank: #21054 (-45)
20K → Half
6:23 | 9:21/mi
25K· 15.53 mi
2:25:16
Rank: #21450 (-396)
Half → 25K
25:07 | 10:22/mi
30K· 18.64 mi
3:00:44
Rank: #22051 (-601)
25K → 30K
35:28 | 11:25/mi
20M
3:16:55
Rank: #22275 (-224)
30K → 20M
16:11 | 11:55/mi
21M
3:32:03
Rank: #22657 (-382)
20M → 21M
15:08 | 15:08/mi
35K· 21.75 mi
3:41:00
Rank: #22747 (-90)
21M → 35K
8:57 | 11:58/mi
23M
3:57:47
Rank: #22995 (-248)
35K → 23M
16:47 | 13:24/mi
24M
4:10:03
Rank: #23125 (-130)
23M → 24M
12:16 | 12:16/mi
40K· 24.85 mi
4:21:22
Rank: #23255 (-130)
24M → 40K
11:19 | 13:14/mi
25.2M
4:26:25
Rank: #23310 (-55)
40K → 25.2M
5:03 | 14:39/mi
Finish· 26.22 mi
4:37:58
Rank: #23363 (-53)
25.2M → Finish
11:33 | 11:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:09
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:37:49
Pace12:02 /mi
📊Positive Split: 31.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0828:469:1628:46
9:16
-
10K
6.21 mi12:17:2257:009:1028:14
9:05
-0:11
15K
9.32 mi12:45:281:25:069:0828:06
9:03
-0:02
20K
12.43 mi13:14:081:53:469:0928:40
9:14
+0:11
Half
13.11 mi13:20:312:00:099:106:23
9:21
+0:07
25K
15.53 mi13:45:382:25:169:2125:07
10:22
+1:01
30K
18.64 mi14:21:063:00:449:4235:28
11:25
+1:03
20M
20.00 mi14:37:173:16:559:5116:11
11:55
+0:30
21M
21.00 mi14:52:253:32:0310:0615:08
15:08
+3:13
35K
21.75 mi15:01:223:41:0010:108:57
11:58
-3:10
23M
23.00 mi15:18:093:57:4710:2016:47
13:24
+1:26
24M
24.00 mi15:30:254:10:0310:2512:16
12:16
-1:08
40K
24.85 mi15:41:444:21:2210:3111:19
13:14
+0:58
25.2M
25.20 mi15:46:474:26:2510:345:03
14:39
+1:25
Finish
26.22 mi15:58:204:37:5810:3711:33
11:20
-3:19

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

9:03 /mi

Average Pace

10:37 /mi

Slowest Pace

15:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:16

52% of race

Time at Steady Pace

1:24:25

30% of race

Time at Slower Pace

48:17

17% of race

Average Pace: 10:36 /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 mi11:49:0828:469:1628:46
9:16
#21406
10K
6.21 mi12:17:2257:009:1028:14
9:05
#21320
15K
9.32 mi12:45:281:25:069:0828:06
9:03
#21143
20K
12.43 mi13:14:081:53:469:0928:40
9:14
#21009
Half
13.11 mi13:20:312:00:099:106:23
9:21
#21054
25K
15.53 mi13:45:382:25:169:2125:07
10:22
#21450
30K
18.64 mi14:21:063:00:449:4235:28
11:25
#22051
20M
20.00 mi14:37:173:16:559:5116:11
11:55
#22275
21M
21.00 mi14:52:253:32:0310:0615:08
15:08
#22657
35K
21.75 mi15:01:223:41:0010:108:57
11:58
#22747
23M
23.00 mi15:18:093:57:4710:2016:47
13:24
#22995
24M
24.00 mi15:30:254:10:0310:2512:16
12:16
#23125
40K
24.85 mi15:41:444:21:2210:3111:19
13:14
#23255
25.2M
25.20 mi15:46:474:26:2510:345:03
14:39
#23310
Finish
26.22 mi15:58:204:37:5810:3711:33
11:20
#23363
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21406128061280620706(Top 78%)12615(Top 83%)12615(Top 239%)
10K6.21 mi3.10 mi21320+8612812-612812-621215(Top 80%)12803(Top 84%)12803(Top 242%)
15K9.32 mi3.11 mi21143+17712768+4412768+4420706(Top 78%)12615(Top 83%)12615(Top 239%)
20K12.43 mi3.11 mi21009+13412709+5912709+5920682(Top 78%)12616(Top 83%)12616(Top 239%)
Half13.11 mi0.68 mi21054-4512734-2512734-2521689(Top 81%)13052(Top 86%)13052(Top 247%)
25K15.53 mi2.42 mi21450-39612914-18012914-18022943(Top 86%)13561(Top 89%)13561(Top 257%)
30K18.64 mi3.11 mi22051-60113166-25213166-25223734(Top 89%)13857(Top 91%)13857(Top 262%)
20M20.00 mi1.36 mi22275-22413256-9013256-9024082(Top 90%)13934(Top 92%)13934(Top 264%)
21M21.00 mi1.00 mi22657-38213407-15113407-15125798(Top 97%)14773(Top 97%)14773(Top 280%)
35K21.75 mi0.75 mi22747-9013441-3413441-3424649(Top 93%)14147(Top 93%)14147(Top 268%)
23M23.00 mi1.25 mi22995-24813552-11113552-11125440(Top 96%)14552(Top 96%)14552(Top 275%)
24M24.00 mi1.00 mi23125-13013613-6113613-6124804(Top 93%)14196(Top 94%)14196(Top 269%)
40K24.85 mi0.85 mi23255-13013666-5313666-5325127(Top 94%)14362(Top 95%)14362(Top 272%)
25.2M25.20 mi0.35 mi23310-5513681-1513681-1525478(Top 96%)14531(Top 96%)14531(Top 275%)
Finish26.22 mi1.02 mi23363-5313699-1813699-1824467(Top 92%)14057(Top 93%)14057(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20706

Males

12615

M18-39

12615

5K→10K

3.1 - 6.2 mi

Top 80%
×5stories
+79ft-138ft

Overall

21215

Males

12803

M18-39

12803

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20706

Males

12615

M18-39

12615

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

20682

Males

12616

M18-39

12616

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21689

Males

13052

M18-39

13052

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

22943

Males

13561

M18-39

13561

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23734

Males

13857

M18-39

13857

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

24082

Males

13934

M18-39

13934

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25798

Males

14773

M18-39

14773

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

24649

Males

14147

M18-39

14147

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25440

Males

14552

M18-39

14552

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

24804

Males

14196

M18-39

14196

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25127

Males

14362

M18-39

14362

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25478

Males

14531

M18-39

14531

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24467

Males

14057

M18-39

14057

Passing Analysis

Category:
Athletes Passed
955
Passed By
2912
Net Change
-1957
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21406
5K → 10K315229+86#21406#21320
10K → 15K26184+177#21320#21143
15K → 20K21379+134#21143#21009
20K → Half1459-45#21009#21054
Half → 25K24420-396#21054#21450
25K → 30K30631-601#21450#22051
30K → 20M16240-224#22051#22275
20M → 21M5387-382#22275#22657
21M → 35K17107-90#22657#22747
35K → 23M12260-248#22747#22995
23M → 24M11141-130#22995#23125
24M → 40K12142-130#23125#23255
40K → 25.2M459-55#23255#23310
25.2M → Finish2174-53#23310#23363
TOTALS9552912-1957
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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