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BOSTON MARATHON 2023

Justin Klee

Bib: 26115•M

MA

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:18/mi
28:53
↑ 97↓ 3451.5%
10K· 6.21 mi
9:03/mi
57:00
↑ 79↓ 1380.4%
15K· 9.32 mi
9:14/mi
1:25:41
↑ 67↓ 78
20K· 12.43 mi
9:21/mi
1:54:43
↑ 106↓ 860.1%
Half· 13.11 mi
9:26/mi
2:01:09
↑ 19↓ 370.5%
25K· 15.53 mi
10:12/mi
2:25:52
↑ 66↓ 880.2%
30K· 18.64 mi
12:52/mi
3:05:50
↑ 181↓ 1480.2%
20M
13:55/mi
3:24:45
↑ 64↓ 500.2%
21M
14:14/mi
3:38:59
↑ 106↓ 241.6%
35K· 21.75 mi
13:03/mi
3:48:45
↑ 17↓ 861.7%
23M
13:32/mi
4:05:42
↑ 23↓ 630.6%
24M
13:11/mi
4:18:53
↓ 821.3%
40K· 24.85 mi
11:31/mi
4:28:44
↓ 200.3%
25.2M
11:21/mi
4:32:39
↑ 13↓ 160.2%
Finish· 26.22 mi
9:56/mi
4:42:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:09
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:41:37
Pace12:20 /mi
📊Positive Split: 33.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:2328:539:1828:53
9:18
-
10K
6.21 mi12:18:3057:009:1028:07
9:03
-0:15
15K
9.32 mi12:47:111:25:419:1228:41
9:14
+0:11
20K
12.43 mi13:16:131:54:439:1429:02
9:21
+0:07
Half
13.11 mi13:22:392:01:099:146:26
9:26
+0:05
25K
15.53 mi13:47:222:25:529:2324:43
10:12
+0:46
30K
18.64 mi14:27:203:05:509:5839:58
12:52
+2:40
20M
20.00 mi14:46:153:24:4510:1418:55
13:55
+1:03
21M
21.00 mi15:00:293:38:5910:2614:14
14:14
+0:19
35K
21.75 mi15:10:153:48:4510:319:46
13:03
-1:11
23M
23.00 mi15:27:124:05:4210:4116:57
13:32
+0:29
24M
24.00 mi15:40:234:18:5310:4713:11
13:11
-0:21
40K
24.85 mi15:50:144:28:4410:499:51
11:31
-1:40
25.2M
25.20 mi15:54:094:32:3910:493:55
11:21
-0:10
Finish
26.22 mi16:04:164:42:4610:4810:07
9:56
-1:25

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

9:03 /mi

Average Pace

10:48 /mi

Slowest Pace

14:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:59

55% of race

Time at Steady Pace

13:46

5% of race

Time at Slower Pace

1:53:01

40% of race

Average Pace: 10:47 /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 mi11:50:2328:539:1828:53
9:18
#21520
10K
6.21 mi12:18:3057:009:1028:07
9:03
#21321
15K
9.32 mi12:47:111:25:419:1228:41
9:14
#21339
20K
12.43 mi13:16:131:54:439:1429:02
9:21
#21287
Half
13.11 mi13:22:392:01:099:146:26
9:26
#21317
25K
15.53 mi13:47:222:25:529:2324:43
10:12
#21567
30K
18.64 mi14:27:203:05:509:5839:58
12:52
#22737
20M
20.00 mi14:46:153:24:4510:1418:55
13:55
#23157
21M
21.00 mi15:00:293:38:5910:2614:14
14:14
#23358
35K
21.75 mi15:10:153:48:4510:319:46
13:03
#23482
23M
23.00 mi15:27:124:05:4210:4116:57
13:32
#23700
24M
24.00 mi15:40:234:18:5310:4713:11
13:11
#23835
40K
24.85 mi15:50:144:28:4410:499:51
11:31
#23826
25.2M
25.20 mi15:54:094:32:3910:493:55
11:21
#23795
Finish
26.22 mi16:04:164:42:4610:4810:07
9:56
#23730
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21520128561285621410(Top 80%)12938(Top 85%)12938(Top 245%)
10K6.21 mi3.10 mi21321+19912813+4312813+4321070(Top 79%)12746(Top 84%)12746(Top 241%)
15K9.32 mi3.11 mi21339-1812850-3712850-3721410(Top 80%)12938(Top 85%)12938(Top 245%)
20K12.43 mi3.11 mi21287+5212841+912841+921082(Top 79%)12780(Top 84%)12780(Top 242%)
Half13.11 mi0.68 mi21317-3012854-1312854-1321912(Top 82%)13164(Top 87%)13164(Top 249%)
25K15.53 mi2.42 mi21567-25012966-11212966-11222605(Top 85%)13409(Top 88%)13409(Top 254%)
30K18.64 mi3.11 mi22737-117013465-49913465-49925299(Top 95%)14541(Top 96%)14541(Top 275%)
20M20.00 mi1.36 mi23157-42013660-19513660-19525779(Top 97%)14754(Top 97%)14754(Top 279%)
21M21.00 mi1.00 mi23358-20113747-8713747-8725230(Top 95%)14481(Top 95%)14481(Top 274%)
35K21.75 mi0.75 mi23482-12413802-5513802-5525591(Top 96%)14628(Top 96%)14628(Top 277%)
23M23.00 mi1.25 mi23700-21813893-9113893-9125523(Top 96%)14589(Top 96%)14589(Top 276%)
24M24.00 mi1.00 mi23835-13513943-5013943-5025602(Top 96%)14600(Top 96%)14600(Top 276%)
40K24.85 mi0.85 mi23826+913936+713936+723231(Top 87%)13424(Top 88%)13424(Top 254%)
25.2M25.20 mi0.35 mi23795+3113918+1813918+1821247(Top 80%)12513(Top 82%)12513(Top 237%)
Finish26.22 mi1.02 mi23730+6513878+4013878+4021554(Top 81%)12655(Top 83%)12655(Top 239%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21410

Males

12938

M18-39

12938

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

21070

Males

12746

M18-39

12746

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21410

Males

12938

M18-39

12938

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

21082

Males

12780

M18-39

12780

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21912

Males

13164

M18-39

13164

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22605

Males

13409

M18-39

13409

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

25299

Males

14541

M18-39

14541

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

25779

Males

14754

M18-39

14754

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

25230

Males

14481

M18-39

14481

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

25591

Males

14628

M18-39

14628

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25523

Males

14589

M18-39

14589

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

25602

Males

14600

M18-39

14600

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23231

Males

13424

M18-39

13424

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21247

Males

12513

M18-39

12513

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

21554

Males

12655

M18-39

12655

Passing Analysis

Category:
Athletes Passed
947
Passed By
3157
Net Change
-2210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21520
5K → 10K392193+199#21520#21321
10K → 15K148166-18#21321#21339
15K → 20K169117+52#21339#21287
20K → Half1747-30#21287#21317
Half → 25K41291-250#21317#21567
25K → 30K61176-1170#21567#22737
30K → 20M12432-420#22737#23157
20M → 21M7208-201#23157#23358
21M → 35K7131-124#23358#23482
35K → 23M8226-218#23482#23700
23M → 24M7142-135#23700#23835
24M → 40K3122+9#23835#23826
40K → 25.2M354+31#23826#23795
25.2M → Finish672+65#23795#23730
TOTALS9473157-2210
📊

Passing Visuals

Category:
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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