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BOSTON MARATHON 2023

Justin Heitz

Bib: 548•M

KS

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:38
Rank: #248
Start → 5K
17:38 | 5:41/mi
10K· 6.21 mi
35:25
Rank: #295 (-47)
5K → 10K
17:47 | 5:43/mi
15K· 9.32 mi
53:32
Rank: #330 (-35)
10K → 15K
18:07 | 5:50/mi
20K· 12.43 mi
1:11:56
Rank: #348 (-18)
15K → 20K
18:24 | 5:55/mi
Half· 13.11 mi
1:15:56
Rank: #354 (-6)
20K → Half
4:00 | 5:52/mi
25K· 15.53 mi
1:30:47
Rank: #398 (-44)
Half → 25K
14:51 | 6:07/mi
30K· 18.64 mi
1:49:47
Rank: #399 (-1)
25K → 30K
19:00 | 6:07/mi
20M
1:58:05
Rank: #411 (-12)
30K → 20M
8:18 | 6:06/mi
21M
2:04:34
Rank: #413 (-2)
20M → 21M
6:29 | 6:29/mi
35K· 21.75 mi
2:09:03
Rank: #424 (-11)
21M → 35K
4:29 | 6:00/mi
23M
2:16:57
Rank: #431 (-7)
35K → 23M
7:54 | 6:19/mi
24M
2:23:01
Rank: #431
23M → 24M
6:04 | 6:04/mi
40K· 24.85 mi
2:28:21
Rank: #427 (+4)
24M → 40K
5:20 | 6:14/mi
25.2M
2:30:38
Rank: #425 (+2)
40K → 25.2M
2:17 | 6:37/mi
Finish· 26.22 mi
2:36:50
Rank: #425
25.2M → Finish
6:12 | 6:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:56
Pace5:48 /mi
2nd Half
Distance13.11 mi
Time1:20:54
Pace6:10 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:4117:385:4117:38
5:41
-
10K
6.21 mi10:35:2835:255:4217:47
5:43
+0:02
15K
9.32 mi10:53:3553:325:4518:07
5:50
+0:07
20K
12.43 mi11:11:591:11:565:4718:24
5:55
+0:05
Half
13.11 mi11:15:591:15:565:484:00
5:52
-0:03
25K
15.53 mi11:30:501:30:475:5114:51
6:07
+0:15
30K
18.64 mi11:49:501:49:475:5319:00
6:07
0:00
20M
20.00 mi11:58:081:58:055:548:18
6:06
-0:01
21M
21.00 mi12:04:372:04:345:566:29
6:29
+0:23
35K
21.75 mi12:09:062:09:035:564:29
6:00
-0:29
23M
23.00 mi12:17:002:16:575:577:54
6:19
+0:19
24M
24.00 mi12:23:042:23:015:586:04
6:04
-0:15
40K
24.85 mi12:28:242:28:215:585:20
6:14
+0:10
25.2M
25.20 mi12:30:412:30:385:592:17
6:37
+0:23
Finish
26.22 mi12:36:532:36:505:596:12
6:05
-0:32

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

5:41 /mi

Average Pace

5:59 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:10

89% of race

Time at Steady Pace

16:40

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:59 /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 mi10:17:4117:385:4117:38
5:41
#248
10K
6.21 mi10:35:2835:255:4217:47
5:43
#295
15K
9.32 mi10:53:3553:325:4518:07
5:50
#330
20K
12.43 mi11:11:591:11:565:4718:24
5:55
#348
Half
13.11 mi11:15:591:15:565:484:00
5:52
#354
25K
15.53 mi11:30:501:30:475:5114:51
6:07
#398
30K
18.64 mi11:49:501:49:475:5319:00
6:07
#399
20M
20.00 mi11:58:081:58:055:548:18
6:06
#411
21M
21.00 mi12:04:372:04:345:566:29
6:29
#413
35K
21.75 mi12:09:062:09:035:564:29
6:00
#424
23M
23.00 mi12:17:002:16:575:577:54
6:19
#431
24M
24.00 mi12:23:042:23:015:586:04
6:04
#431
40K
24.85 mi12:28:242:28:215:585:20
6:14
#427
25.2M
25.20 mi12:30:412:30:385:592:17
6:37
#425
Finish
26.22 mi12:36:532:36:505:596:12
6:05
#425
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi248248248405(Top 2%)371(Top 2%)371(Top 7%)
10K6.21 mi3.10 mi295-47267-19267-19341(Top 1%)307(Top 2%)307(Top 6%)
15K9.32 mi3.11 mi330-35297-30297-30405(Top 2%)371(Top 2%)371(Top 7%)
20K12.43 mi3.11 mi348-18315-18315-18446(Top 2%)410(Top 3%)410(Top 8%)
Half13.11 mi0.68 mi354-6321-6321-6475(Top 2%)437(Top 3%)437(Top 8%)
25K15.53 mi2.42 mi398-44364-43364-43798(Top 3%)755(Top 5%)755(Top 14%)
30K18.64 mi3.11 mi399-1367-3367-3529(Top 2%)496(Top 3%)496(Top 9%)
20M20.00 mi1.36 mi411-12379-12379-12489(Top 2%)455(Top 3%)455(Top 9%)
21M21.00 mi1.00 mi413-2378+1378+1615(Top 2%)579(Top 4%)579(Top 11%)
35K21.75 mi0.75 mi424-11389-11389-11646(Top 2%)606(Top 4%)606(Top 11%)
23M23.00 mi1.25 mi431-7396-7396-7849(Top 3%)805(Top 5%)805(Top 15%)
24M24.00 mi1.00 mi431396396673(Top 3%)636(Top 4%)636(Top 12%)
40K24.85 mi0.85 mi427+4392+4392+4719(Top 3%)680(Top 4%)680(Top 13%)
25.2M25.20 mi0.35 mi425+2390+2390+2669(Top 3%)634(Top 4%)634(Top 12%)
Finish26.22 mi1.02 mi425390390924(Top 3%)882(Top 6%)882(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

405

Males

371

M18-39

371

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

341

Males

307

M18-39

307

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

405

Males

371

M18-39

371

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

446

Males

410

M18-39

410

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

475

Males

437

M18-39

437

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

798

Males

755

M18-39

755

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

529

Males

496

M18-39

496

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

489

Males

455

M18-39

455

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

615

Males

579

M18-39

579

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

646

Males

606

M18-39

606

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

849

Males

805

M18-39

805

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

673

Males

636

M18-39

636

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

719

Males

680

M18-39

680

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

669

Males

634

M18-39

634

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

924

Males

882

M18-39

882

Passing Analysis

Category:
Athletes Passed
86
Passed By
263
Net Change
-177
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#248
5K → 10K1057-47#248#295
10K → 15K237-35#295#330
15K → 20K523-18#330#348
20K → Half06-6#348#354
Half → 25K347-44#354#398
25K → 30K1617-1#398#399
30K → 20M416-12#399#411
20M → 21M79-2#411#413
21M → 35K112-11#413#424
35K → 23M613-7#424#431
23M → 24M660#431#431
24M → 40K128+4#431#427
40K → 25.2M53+2#427#425
25.2M → Finish990#425#425
TOTALS86263-177
📊

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