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BOSTON MARATHON 2023

James Kimball

Bib: 4054•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 49%
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
21:01
Rank: #4326
Start → 5K
21:01 | 6:46/mi
10K· 6.21 mi
41:32
Rank: #3818 (+508)
5K → 10K
20:31 | 6:36/mi
15K· 9.32 mi
1:02:06
Rank: #3657 (+161)
10K → 15K
20:34 | 6:37/mi
20K· 12.43 mi
1:23:35
Rank: #4131 (-474)
15K → 20K
21:29 | 6:55/mi
Half· 13.11 mi
1:28:16
Rank: #4206 (-75)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:45:36
Rank: #4682 (-476)
Half → 25K
17:20 | 7:09/mi
30K· 18.64 mi
2:09:34
Rank: #5535 (-853)
25K → 30K
23:58 | 7:43/mi
20M
2:20:42
Rank: #5861 (-326)
30K → 20M
11:08 | 8:12/mi
21M
2:29:35
Rank: #6126 (-265)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
2:35:23
Rank: #6233 (-107)
21M → 35K
5:48 | 7:45/mi
23M
2:46:08
Rank: #6547 (-314)
35K → 23M
10:45 | 8:35/mi
24M
2:55:28
Rank: #7017 (-470)
23M → 24M
9:20 | 9:20/mi
40K· 24.85 mi
3:06:07
Rank: #8222 (-1205)
24M → 40K
10:39 | 12:27/mi
25.2M
3:10:23
Rank: #8641 (-419)
40K → 25.2M
4:16 | 12:22/mi
Finish· 26.22 mi
3:19:31
Rank: #9055 (-414)
25.2M → Finish
9:08 | 8:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:16
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:51:15
Pace8:29 /mi
📊Positive Split: 26.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4621:016:4621:01
6:46
-
10K
6.21 mi10:43:1741:326:4120:31
6:36
-0:10
15K
9.32 mi11:03:511:02:066:4020:34
6:37
+0:01
20K
12.43 mi11:25:201:23:356:4421:29
6:55
+0:18
Half
13.11 mi11:30:011:28:166:444:41
6:52
-0:03
25K
15.53 mi11:47:211:45:366:4817:20
7:09
+0:17
30K
18.64 mi12:11:192:09:346:5723:58
7:43
+0:34
20M
20.00 mi12:22:272:20:427:0211:08
8:12
+0:29
21M
21.00 mi12:31:202:29:357:078:53
8:53
+0:41
35K
21.75 mi12:37:082:35:237:095:48
7:45
-1:08
23M
23.00 mi12:47:532:46:087:1310:45
8:35
+0:50
24M
24.00 mi12:57:132:55:287:199:20
9:20
+0:45
40K
24.85 mi13:07:523:06:077:2910:39
12:27
+3:07
25.2M
25.20 mi13:12:083:10:237:334:16
12:22
-0:05
Finish
26.22 mi13:21:163:19:317:379:08
8:58
-3:24

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

6:36 /mi

Average Pace

7:37 /mi

Slowest Pace

12:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:02:06

31% of race

Time at Steady Pace

1:35:09

48% of race

Time at Slower Pace

42:16

21% of race

Average Pace: 7:37 /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 mi10:22:4621:016:4621:01
6:46
#4326
10K
6.21 mi10:43:1741:326:4120:31
6:36
#3818
15K
9.32 mi11:03:511:02:066:4020:34
6:37
#3657
20K
12.43 mi11:25:201:23:356:4421:29
6:55
#4131
Half
13.11 mi11:30:011:28:166:444:41
6:52
#4206
25K
15.53 mi11:47:211:45:366:4817:20
7:09
#4682
30K
18.64 mi12:11:192:09:346:5723:58
7:43
#5535
20M
20.00 mi12:22:272:20:427:0211:08
8:12
#5861
21M
21.00 mi12:31:202:29:357:078:53
8:53
#6126
35K
21.75 mi12:37:082:35:237:095:48
7:45
#6233
23M
23.00 mi12:47:532:46:087:1310:45
8:35
#6547
24M
24.00 mi12:57:132:55:287:199:20
9:20
#7017
40K
24.85 mi13:07:523:06:077:2910:39
12:27
#8222
25.2M
25.20 mi13:12:083:10:237:334:16
12:22
#8641
Finish
26.22 mi13:21:163:19:317:379:08
8:58
#9055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4326404440443466(Top 13%)3288(Top 22%)3288(Top 62%)
10K6.21 mi3.10 mi3818+5083597+4473597+4473534(Top 13%)3347(Top 22%)3347(Top 63%)
15K9.32 mi3.11 mi3657+1613455+1423455+1423466(Top 13%)3288(Top 22%)3288(Top 62%)
20K12.43 mi3.11 mi4131-4743878-4233878-4235450(Top 20%)5031(Top 33%)5031(Top 95%)
Half13.11 mi0.68 mi4206-753943-653943-655817(Top 22%)5349(Top 35%)5349(Top 101%)
25K15.53 mi2.42 mi4682-4764361-4184361-4186391(Top 24%)5718(Top 38%)5718(Top 108%)
30K18.64 mi3.11 mi5535-8535091-7305091-7308740(Top 33%)7122(Top 47%)7122(Top 135%)
20M20.00 mi1.36 mi5861-3265349-2585349-25811624(Top 44%)8529(Top 56%)8529(Top 161%)
21M21.00 mi1.00 mi6126-2655536-1875536-18712717(Top 48%)8892(Top 59%)8892(Top 168%)
35K21.75 mi0.75 mi6233-1075614-785614-7810256(Top 39%)7749(Top 51%)7749(Top 147%)
23M23.00 mi1.25 mi6547-3145832-2185832-21813701(Top 51%)9229(Top 61%)9229(Top 175%)
24M24.00 mi1.00 mi7017-4706144-3126144-31218569(Top 70%)11330(Top 75%)11330(Top 214%)
40K24.85 mi0.85 mi8222-12056905-7616905-76124387(Top 92%)13979(Top 92%)13979(Top 265%)
25.2M25.20 mi0.35 mi8641-4197158-2537158-25323064(Top 87%)13334(Top 88%)13334(Top 252%)
Finish26.22 mi1.02 mi9055-4147370-2127370-21217756(Top 67%)10940(Top 72%)10940(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3466

Males

3288

M18-39

3288

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3534

Males

3347

M18-39

3347

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3466

Males

3288

M18-39

3288

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5450

Males

5031

M18-39

5031

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

5817

Males

5349

M18-39

5349

Half→25K

13.1 - 15.5 mi

Top 24%
×4stories
+66ft-88ft

Overall

6391

Males

5718

M18-39

5718

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8740

Males

7122

M18-39

7122

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11624

Males

8529

M18-39

8529

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12717

Males

8892

M18-39

8892

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10256

Males

7749

M18-39

7749

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13701

Males

9229

M18-39

9229

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

18569

Males

11330

M18-39

11330

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24387

Males

13979

M18-39

13979

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23064

Males

13334

M18-39

13334

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17756

Males

10940

M18-39

10940

Passing Analysis

Category:
Athletes Passed
896
Passed By
5625
Net Change
-4729
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4326
5K → 10K56658+508#4326#3818
10K → 15K20443+161#3818#3657
15K → 20K22496-474#3657#4131
20K → Half479-75#4131#4206
Half → 25K26502-476#4206#4682
25K → 30K17870-853#4682#5535
30K → 20M10336-326#5535#5861
20M → 21M9274-265#5861#6126
21M → 35K7114-107#6126#6233
35K → 23M21335-314#6233#6547
23M → 24M7477-470#6547#7017
24M → 40K01205-1205#7017#8222
40K → 25.2M0419-419#8222#8641
25.2M → Finish3417-414#8641#9055
TOTALS8965625-4729
📊

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