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BOSTON MARATHON 2023

James Vos

Bib: 3161•M

OR

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0:00
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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
26:51
Rank: #18501
Start → 5K
26:51 | 8:39/mi
10K· 6.21 mi
53:51
Rank: #18924 (-423)
5K → 10K
27:00 | 8:41/mi
15K· 9.32 mi
1:24:40
Rank: #20959 (-2035)
10K → 15K
30:49 | 9:55/mi
20K· 12.43 mi
1:57:02
Rank: #21856 (-897)
15K → 20K
32:22 | 10:25/mi
Half· 13.11 mi
2:03:49
Rank: #21919 (-63)
20K → Half
6:47 | 9:57/mi
25K· 15.53 mi
2:36:33
Rank: #23380 (-1461)
Half → 25K
32:44 | 13:30/mi
30K· 18.64 mi
3:16:52
Rank: #23928 (-548)
25K → 30K
40:19 | 12:59/mi
20M
3:34:45
Rank: #24096 (-168)
30K → 20M
17:53 | 13:10/mi
21M
3:52:54
Rank: #24505 (-409)
20M → 21M
18:09 | 18:09/mi
35K· 21.75 mi
4:01:19
Rank: #24479 (+26)
21M → 35K
8:25 | 11:15/mi
23M
4:17:11
Rank: #24521 (-42)
35K → 23M
15:52 | 12:40/mi
24M
4:31:13
Rank: #24672 (-151)
23M → 24M
14:02 | 14:02/mi
40K· 24.85 mi
4:43:41
Rank: #24794 (-122)
24M → 40K
12:28 | 14:35/mi
25.2M
4:48:28
Rank: #24811 (-17)
40K → 25.2M
4:47 | 13:52/mi
Finish· 26.22 mi
5:00:00
Rank: #24818 (-7)
25.2M → Finish
11:32 | 11:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:49
Pace9:27 /mi
2nd Half
Distance13.11 mi
Time2:56:11
Pace13:26 /mi
📊Positive Split: 42.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:1126:518:3926:51
8:39
-
10K
6.21 mi10:55:1153:518:4027:00
8:41
+0:02
15K
9.32 mi11:26:001:24:409:0530:49
9:55
+1:14
20K
12.43 mi11:58:221:57:029:2532:22
10:25
+0:30
Half
13.11 mi12:05:092:03:499:276:47
9:57
-0:28
25K
15.53 mi12:37:532:36:3310:0532:44
13:30
+3:33
30K
18.64 mi13:18:123:16:5210:3440:19
12:59
-0:31
20M
20.00 mi13:36:053:34:4510:4417:53
13:10
+0:11
21M
21.00 mi13:54:143:52:5411:0518:09
18:09
+4:59
35K
21.75 mi14:02:394:01:1911:068:25
11:15
-6:54
23M
23.00 mi14:18:314:17:1111:1115:52
12:40
+1:25
24M
24.00 mi14:32:334:31:1311:1814:02
14:02
+1:22
40K
24.85 mi14:45:014:43:4111:2512:28
14:35
+0:33
25.2M
25.20 mi14:49:484:48:2811:274:47
13:52
-0:43
Finish
26.22 mi15:01:205:00:0011:2711:32
11:19
-2:33

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

8:39 /mi

Average Pace

11:27 /mi

Slowest Pace

18:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:46

48% of race

Time at Steady Pace

1:51:35

37% of race

Time at Slower Pace

44:39

15% of race

Average Pace: 11:26 /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 mi10:28:1126:518:3926:51
8:39
#18501
10K
6.21 mi10:55:1153:518:4027:00
8:41
#18924
15K
9.32 mi11:26:001:24:409:0530:49
9:55
#20959
20K
12.43 mi11:58:221:57:029:2532:22
10:25
#21856
Half
13.11 mi12:05:092:03:499:276:47
9:57
#21919
25K
15.53 mi12:37:532:36:3310:0532:44
13:30
#23380
30K
18.64 mi13:18:123:16:5210:3440:19
12:59
#23928
20M
20.00 mi13:36:053:34:4510:4417:53
13:10
#24096
21M
21.00 mi13:54:143:52:5411:0518:09
18:09
#24505
35K
21.75 mi14:02:394:01:1911:068:25
11:15
#24479
23M
23.00 mi14:18:314:17:1111:1115:52
12:40
#24521
24M
24.00 mi14:32:334:31:1311:1814:02
14:02
#24672
40K
24.85 mi14:45:014:43:4111:2512:28
14:35
#24794
25.2M
25.20 mi14:49:484:48:2811:274:47
13:52
#24811
Finish
26.22 mi15:01:205:00:0011:2711:32
11:19
#24818
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18501116141161423351(Top 88%)13812(Top 91%)13812(Top 261%)
10K6.21 mi3.10 mi18924-42311807-19311807-19319374(Top 73%)12052(Top 79%)12052(Top 228%)
15K9.32 mi3.11 mi20959-203512670-86312670-86323351(Top 88%)13812(Top 91%)13812(Top 261%)
20K12.43 mi3.11 mi21856-89713092-42213092-42223688(Top 89%)13930(Top 92%)13930(Top 264%)
Half13.11 mi0.68 mi21919-6313113-2113113-2123158(Top 87%)13698(Top 90%)13698(Top 259%)
25K15.53 mi2.42 mi23380-146113804-69113804-69126126(Top 98%)14960(Top 99%)14960(Top 283%)
30K18.64 mi3.11 mi23928-54814030-22614030-22625387(Top 95%)14580(Top 96%)14580(Top 276%)
20M20.00 mi1.36 mi24096-16814083-5314083-5325293(Top 95%)14518(Top 96%)14518(Top 275%)
21M21.00 mi1.00 mi24505-40914264-18114264-18126557(Top 100%)15143(Top 100%)15143(Top 287%)
35K21.75 mi0.75 mi24479+2614247+1714247+1723723(Top 89%)13703(Top 90%)13703(Top 259%)
23M23.00 mi1.25 mi24521-4214258-1114258-1124762(Top 93%)14224(Top 94%)14224(Top 269%)
24M24.00 mi1.00 mi24672-15114307-4914307-4926086(Top 98%)14856(Top 98%)14856(Top 281%)
40K24.85 mi0.85 mi24794-12214356-4914356-4925979(Top 98%)14794(Top 97%)14794(Top 280%)
25.2M25.20 mi0.35 mi24811-1714361-514361-524890(Top 93%)14229(Top 94%)14229(Top 269%)
Finish26.22 mi1.02 mi24818-714355+614355+624447(Top 92%)14048(Top 93%)14048(Top 266%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23351

Males

13812

M18-39

13812

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

19374

Males

12052

M18-39

12052

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23351

Males

13812

M18-39

13812

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23688

Males

13930

M18-39

13930

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23158

Males

13698

M18-39

13698

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

26126

Males

14960

M18-39

14960

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

25387

Males

14580

M18-39

14580

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25293

Males

14518

M18-39

14518

20M→21M

20.0 - 21.0 mi

Top 100%
×8stories
+106ft-24ft

Overall

26557

Males

15143

M18-39

15143

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

23723

Males

13703

M18-39

13703

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24762

Males

14224

M18-39

14224

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

26086

Males

14856

M18-39

14856

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

25979

Males

14794

M18-39

14794

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

24890

Males

14229

M18-39

14229

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24447

Males

14048

M18-39

14048

Passing Analysis

Category:
Athletes Passed
318
Passed By
6635
Net Change
-6317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18501
5K → 10K167590-423#18501#18924
10K → 15K52040-2035#18924#20959
15K → 20K8905-897#20959#21856
20K → Half1275-63#21856#21919
Half → 25K31464-1461#21919#23380
25K → 30K14562-548#23380#23928
30K → 20M14182-168#23928#24096
20M → 21M1410-409#24096#24505
21M → 35K3711+26#24505#24479
35K → 23M2668-42#24479#24521
23M → 24M6157-151#24521#24672
24M → 40K6128-122#24672#24794
40K → 25.2M219-17#24794#24811
25.2M → Finish1724-7#24811#24818
TOTALS3186635-6317
📊

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