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BOSTON MARATHON 2023

Tom De Bruyn

Bib: 4539•M

CA

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
27:29
Rank: #19717
Start → 5K
27:29 | 8:51/mi
10K· 6.21 mi
55:30
Rank: #20354 (-637)
5K → 10K
28:01 | 9:01/mi
15K· 9.32 mi
1:23:43
Rank: #20488 (-134)
10K → 15K
28:13 | 9:05/mi
20K· 12.43 mi
1:55:28
Rank: #21478 (-990)
15K → 20K
31:45 | 10:13/mi
Half· 13.11 mi
2:01:59
Rank: #21510 (-32)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:27:37
Rank: #21900 (-390)
Half → 25K
25:38 | 10:34/mi
30K· 18.64 mi
3:00:11
Rank: #21963 (-63)
25K → 30K
32:34 | 10:29/mi
20M
3:14:51
Rank: #21997 (-34)
30K → 20M
14:40 | 10:48/mi
21M
3:26:15
Rank: #21987 (+10)
20M → 21M
11:24 | 11:24/mi
35K· 21.75 mi
3:34:10
Rank: #22019 (-32)
21M → 35K
7:55 | 10:35/mi
23M
3:48:17
Rank: #22069 (-50)
35K → 23M
14:07 | 11:16/mi
24M
3:58:45
Rank: #22057 (+12)
23M → 24M
10:28 | 10:28/mi
40K· 24.85 mi
4:07:32
Rank: #22005 (+52)
24M → 40K
8:47 | 10:16/mi
25.2M
4:11:32
Rank: #21997 (+8)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
4:21:48
Rank: #21992 (+5)
25.2M → Finish
10:16 | 10:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:59
Pace9:18 /mi
2nd Half
Distance13.11 mi
Time2:19:49
Pace10:40 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3027:298:5127:29
8:51
-
10K
6.21 mi11:47:3155:308:5628:01
9:01
+0:10
15K
9.32 mi12:15:441:23:438:5928:13
9:05
+0:04
20K
12.43 mi12:47:291:55:289:1731:45
10:13
+1:08
Half
13.11 mi12:54:002:01:599:186:31
9:33
-0:40
25K
15.53 mi13:19:382:27:379:3025:38
10:34
+1:01
30K
18.64 mi13:52:123:00:119:4032:34
10:29
-0:05
20M
20.00 mi14:06:523:14:519:4514:40
10:48
+0:19
21M
21.00 mi14:18:163:26:159:4911:24
11:24
+0:36
35K
21.75 mi14:26:113:34:109:517:55
10:35
-0:49
23M
23.00 mi14:40:183:48:179:5614:07
11:16
+0:41
24M
24.00 mi14:50:463:58:459:5710:28
10:28
-0:48
40K
24.85 mi14:59:334:07:329:588:47
10:16
-0:12
25.2M
25.20 mi15:03:334:11:329:594:00
11:36
+1:20
Finish
26.22 mi15:13:494:21:4810:0010:16
10:04
-1:32

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

8:51 /mi

Average Pace

10:00 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:14

34% of race

Time at Steady Pace

2:22:03

54% of race

Time at Slower Pace

29:31

11% of race

Average Pace: 9:59 /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 mi11:19:3027:298:5127:29
8:51
#19717
10K
6.21 mi11:47:3155:308:5628:01
9:01
#20354
15K
9.32 mi12:15:441:23:438:5928:13
9:05
#20488
20K
12.43 mi12:47:291:55:289:1731:45
10:13
#21478
Half
13.11 mi12:54:002:01:599:186:31
9:33
#21510
25K
15.53 mi13:19:382:27:379:3025:38
10:34
#21900
30K
18.64 mi13:52:123:00:119:4032:34
10:29
#21963
20M
20.00 mi14:06:523:14:519:4514:40
10:48
#21997
21M
21.00 mi14:18:163:26:159:4911:24
11:24
#21987
35K
21.75 mi14:26:113:34:109:517:55
10:35
#22019
23M
23.00 mi14:40:183:48:179:5614:07
11:16
#22069
24M
24.00 mi14:50:463:58:459:5710:28
10:28
#22057
40K
24.85 mi14:59:334:07:329:588:47
10:16
#22005
25.2M
25.20 mi15:03:334:11:329:594:00
11:36
#21997
Finish
26.22 mi15:13:494:21:4810:0010:16
10:04
#21992
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi19717120551205520868(Top 78%)12685(Top 84%)12685(Top 240%)
10K6.21 mi3.10 mi20354-63712381-32612381-32620948(Top 79%)12699(Top 84%)12699(Top 240%)
15K9.32 mi3.11 mi20488-13412459-7812459-7820868(Top 78%)12685(Top 84%)12685(Top 240%)
20K12.43 mi3.11 mi21478-99012917-45812917-45823322(Top 88%)13772(Top 91%)13772(Top 261%)
Half13.11 mi0.68 mi21510-3212937-2012937-2022246(Top 84%)13305(Top 88%)13305(Top 252%)
25K15.53 mi2.42 mi21900-39013109-17213109-17223302(Top 88%)13722(Top 90%)13722(Top 260%)
30K18.64 mi3.11 mi21963-6313125-1613125-1622168(Top 83%)13154(Top 87%)13154(Top 249%)
20M20.00 mi1.36 mi21997-3413130-513130-522329(Top 84%)13150(Top 87%)13150(Top 249%)
21M21.00 mi1.00 mi21987+1013120+1013120+1021684(Top 81%)12841(Top 85%)12841(Top 243%)
35K21.75 mi0.75 mi22019-3213126-613126-622522(Top 85%)13163(Top 87%)13163(Top 249%)
23M23.00 mi1.25 mi22069-5013137-1113137-1122846(Top 86%)13316(Top 88%)13316(Top 252%)
24M24.00 mi1.00 mi22057+1213128+913128+921959(Top 82%)12859(Top 85%)12859(Top 243%)
40K24.85 mi0.85 mi22005+5213095+3313095+3320664(Top 78%)12221(Top 81%)12221(Top 231%)
25.2M25.20 mi0.35 mi21997+813085+1013085+1021748(Top 82%)12742(Top 84%)12742(Top 241%)
Finish26.22 mi1.02 mi21992+513073+1213073+1221959(Top 82%)12842(Top 85%)12842(Top 243%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20868

Males

12685

M18-39

12685

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

20948

Males

12699

M18-39

12699

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20868

Males

12685

M18-39

12685

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23322

Males

13772

M18-39

13772

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22246

Males

13305

M18-39

13305

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23302

Males

13722

M18-39

13722

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22168

Males

13154

M18-39

13154

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22329

Males

13150

M18-39

13150

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

21684

Males

12841

M18-39

12841

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

22522

Males

13163

M18-39

13163

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

22846

Males

13316

M18-39

13316

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21959

Males

12859

M18-39

12859

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20664

Males

12221

M18-39

12221

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21748

Males

12742

M18-39

12742

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21959

Males

12842

M18-39

12842

Passing Analysis

Category:
Athletes Passed
751
Passed By
3026
Net Change
-2275
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19717
5K → 10K95732-637#19717#20354
10K → 15K133267-134#20354#20488
15K → 20K171007-990#20488#21478
20K → Half1547-32#21478#21510
Half → 25K23413-390#21510#21900
25K → 30K123186-63#21900#21963
30K → 20M5286-34#21963#21997
20M → 21M7060+10#21997#21987
21M → 35K2052-32#21987#22019
35K → 23M3383-50#22019#22069
23M → 24M4634+12#22069#22057
24M → 40K6614+52#22057#22005
40K → 25.2M1810+8#22005#21997
25.2M → Finish4035+5#21997#21992
TOTALS7513026-2275
📊

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