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BOSTON MARATHON 2023

Justin Shumaker

Bib: 3830•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Division (M18-39)
#0 / 5285
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #4166
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
41:50
Rank: #4297 (-131)
5K → 10K
20:51 | 6:43/mi
15K· 9.32 mi
1:02:43
Rank: #4299 (-2)
10K → 15K
20:53 | 6:43/mi
20K· 12.43 mi
1:23:31
Rank: #4055 (+244)
15K → 20K
20:48 | 6:42/mi
Half· 13.11 mi
1:27:58
Rank: #3977 (+78)
20K → Half
4:27 | 6:31/mi
25K· 15.53 mi
1:44:23
Rank: #3958 (+19)
Half → 25K
16:25 | 6:46/mi
30K· 18.64 mi
2:05:32
Rank: #3722 (+236)
25K → 30K
21:09 | 6:48/mi
20M
2:14:49
Rank: #3625 (+97)
30K → 20M
9:17 | 6:50/mi
21M
2:21:50
Rank: #3488 (+137)
20M → 21M
7:01 | 7:01/mi
35K· 21.75 mi
2:26:44
Rank: #3418 (+70)
21M → 35K
4:54 | 6:33/mi
23M
2:35:27
Rank: #3405 (+13)
35K → 23M
8:43 | 6:58/mi
24M
2:42:16
Rank: #3412 (-7)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:48:15
Rank: #3416 (-4)
24M → 40K
5:59 | 7:00/mi
25.2M
2:50:48
Rank: #3416
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:57:31
Rank: #3331 (+85)
25.2M → Finish
6:43 | 6:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:58
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:29:33
Pace6:50 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1720:596:4520:59
6:45
-
10K
6.21 mi10:43:0841:506:4420:51
6:43
-0:02
15K
9.32 mi11:04:011:02:436:4420:53
6:43
0:00
20K
12.43 mi11:24:491:23:316:4320:48
6:42
-0:01
Half
13.11 mi11:29:161:27:586:434:27
6:31
-0:11
25K
15.53 mi11:45:411:44:236:4316:25
6:46
+0:15
30K
18.64 mi12:06:502:05:326:4421:09
6:48
+0:02
20M
20.00 mi12:16:072:14:496:449:17
6:50
+0:02
21M
21.00 mi12:23:082:21:506:457:01
7:01
+0:11
35K
21.75 mi12:28:022:26:446:454:54
6:33
-0:28
23M
23.00 mi12:36:452:35:276:468:43
6:58
+0:25
24M
24.00 mi12:43:342:42:166:466:49
6:49
-0:09
40K
24.85 mi12:49:332:48:156:465:59
7:00
+0:11
25.2M
25.20 mi12:52:062:50:486:472:33
7:24
+0:24
Finish
26.22 mi12:58:492:57:316:476:43
6:35
-0:49

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

6:31 /mi

Average Pace

6:47 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:58

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:22:1720:596:4520:59
6:45
#4166
10K
6.21 mi10:43:0841:506:4420:51
6:43
#4297
15K
9.32 mi11:04:011:02:436:4420:53
6:43
#4299
20K
12.43 mi11:24:491:23:316:4320:48
6:42
#4055
Half
13.11 mi11:29:161:27:586:434:27
6:31
#3977
25K
15.53 mi11:45:411:44:236:4316:25
6:46
#3958
30K
18.64 mi12:06:502:05:326:4421:09
6:48
#3722
20M
20.00 mi12:16:072:14:496:449:17
6:50
#3625
21M
21.00 mi12:23:082:21:506:457:01
7:01
#3488
35K
21.75 mi12:28:022:26:446:454:54
6:33
#3418
23M
23.00 mi12:36:452:35:276:468:43
6:58
#3405
24M
24.00 mi12:43:342:42:166:466:49
6:49
#3412
40K
24.85 mi12:49:332:48:156:465:59
7:00
#3416
25.2M
25.20 mi12:52:062:50:486:472:33
7:24
#3416
Finish
26.22 mi12:58:492:57:316:476:43
6:35
#3331
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4166390239024325(Top 16%)4050(Top 27%)4050(Top 77%)
10K6.21 mi3.10 mi4297-1314026-1244026-1244424(Top 17%)4135(Top 27%)4135(Top 78%)
15K9.32 mi3.11 mi4299-2402640264325(Top 16%)4050(Top 27%)4050(Top 77%)
20K12.43 mi3.11 mi4055+2443808+2183808+2183539(Top 13%)3348(Top 22%)3348(Top 63%)
Half13.11 mi0.68 mi3977+783740+683740+682948(Top 11%)2823(Top 19%)2823(Top 53%)
25K15.53 mi2.42 mi3958+193726+143726+143886(Top 15%)3654(Top 24%)3654(Top 69%)
30K18.64 mi3.11 mi3722+2363516+2103516+2103035(Top 11%)2868(Top 19%)2868(Top 54%)
20M20.00 mi1.36 mi3625+973427+893427+893023(Top 11%)2843(Top 19%)2843(Top 54%)
21M21.00 mi1.00 mi3488+1373304+1233304+1232232(Top 8%)2110(Top 14%)2110(Top 40%)
35K21.75 mi0.75 mi3418+703235+693235+692722(Top 10%)2565(Top 17%)2565(Top 49%)
23M23.00 mi1.25 mi3405+133223+123223+123570(Top 13%)3309(Top 22%)3309(Top 63%)
24M24.00 mi1.00 mi3412-73225-23225-23724(Top 14%)3410(Top 22%)3410(Top 65%)
40K24.85 mi0.85 mi3416-43227-23227-23818(Top 14%)3435(Top 23%)3435(Top 65%)
25.2M25.20 mi0.35 mi3416322732273365(Top 13%)3048(Top 20%)3048(Top 58%)
Finish26.22 mi1.02 mi3331+853146+813146+812937(Top 11%)2662(Top 18%)2662(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4325

Males

4050

M18-39

4050

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4424

Males

4135

M18-39

4135

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4325

Males

4050

M18-39

4050

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3539

Males

3348

M18-39

3348

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

2948

Males

2823

M18-39

2823

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

3886

Males

3654

M18-39

3654

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3035

Males

2868

M18-39

2868

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3023

Males

2843

M18-39

2843

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2232

Males

2110

M18-39

2110

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2722

Males

2565

M18-39

2565

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3570

Males

3309

M18-39

3309

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3724

Males

3410

M18-39

3410

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3818

Males

3435

M18-39

3435

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3365

Males

3048

M18-39

3048

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2937

Males

2662

M18-39

2662

Passing Analysis

Category:
Athletes Passed
1562
Passed By
727
Net Change
+835
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4166
5K → 10K164295-131#4166#4297
10K → 15K126128-2#4297#4299
15K → 20K25915+244#4299#4055
20K → Half791+78#4055#3977
Half → 25K8869+19#3977#3958
25K → 30K26024+236#3958#3722
30K → 20M1069+97#3722#3625
20M → 21M1458+137#3625#3488
21M → 35K788+70#3488#3418
35K → 23M6350+13#3418#3405
23M → 24M3744-7#3405#3412
24M → 40K4044-4#3412#3416
40K → 25.2M18180#3416#3416
25.2M → Finish9914+85#3416#3331
TOTALS1562727+835
📊

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