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BOSTON MARATHON 2023

John Klees

Bib: 21223•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
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
10:20/mi
32:05
↑ 97↓ 3451.5%
10K· 6.21 mi
10:11/mi
1:03:42
↑ 79↓ 1380.4%
15K· 9.32 mi
10:49/mi
1:37:17
↑ 67↓ 78
20K· 12.43 mi
11:01/mi
2:11:32
↑ 106↓ 860.1%
Half· 13.11 mi
10:46/mi
2:18:53
↑ 19↓ 370.5%
25K· 15.53 mi
11:41/mi
2:47:12
↑ 66↓ 880.2%
30K· 18.64 mi
11:43/mi
3:23:37
↑ 181↓ 1480.2%
20M
11:45/mi
3:39:35
↑ 64↓ 500.2%
21M
12:47/mi
3:52:22
↑ 106↓ 241.6%
35K· 21.75 mi
11:32/mi
4:01:00
↑ 17↓ 861.7%
23M
11:48/mi
4:15:46
↑ 23↓ 630.6%
24M
11:20/mi
4:27:06
↓ 821.3%
40K· 24.85 mi
11:50/mi
4:37:13
↓ 200.3%
25.2M
12:57/mi
4:41:41
↑ 13↓ 160.2%
Finish· 26.22 mi
11:26/mi
4:53:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:53
Pace10:36 /mi
2nd Half
Distance13.11 mi
Time2:34:27
Pace11:47 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:0032:0510:2032:05
10:20
-
10K
6.21 mi11:57:371:03:4210:1531:37
10:11
-0:09
15K
9.32 mi12:31:121:37:1710:2633:35
10:49
+0:38
20K
12.43 mi13:05:272:11:3210:3534:15
11:01
+0:12
Half
13.11 mi13:12:482:18:5310:367:21
10:46
-0:15
25K
15.53 mi13:41:072:47:1210:4628:19
11:41
+0:55
30K
18.64 mi14:17:323:23:3710:5536:25
11:43
+0:02
20M
20.00 mi14:33:303:39:3510:5915:58
11:45
+0:02
21M
21.00 mi14:46:173:52:2211:0412:47
12:47
+1:02
35K
21.75 mi14:54:554:01:0011:058:38
11:32
-1:15
23M
23.00 mi15:09:414:15:4611:0714:46
11:48
+0:16
24M
24.00 mi15:21:014:27:0611:0811:20
11:20
-0:28
40K
24.85 mi15:31:084:37:1311:0910:07
11:50
+0:30
25.2M
25.20 mi15:35:364:41:4111:114:28
12:57
+1:07
Finish
26.22 mi15:47:154:53:2011:1211:39
11:26
-1:31

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

10:11 /mi

Average Pace

11:12 /mi

Slowest Pace

12:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:53

47% of race

Time at Steady Pace

2:17:12

47% of race

Time at Slower Pace

17:15

6% of race

Average Pace: 11:11 /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 mi11:26:0032:0510:2032:05
10:20
#24286
10K
6.21 mi11:57:371:03:4210:1531:37
10:11
#24161
15K
9.32 mi12:31:121:37:1710:2633:35
10:49
#24520
20K
12.43 mi13:05:272:11:3210:3534:15
11:01
#24556
Half
13.11 mi13:12:482:18:5310:367:21
10:46
#24576
25K
15.53 mi13:41:072:47:1210:4628:19
11:41
#24649
30K
18.64 mi14:17:323:23:3710:5536:25
11:43
#24550
20M
20.00 mi14:33:303:39:3510:5915:58
11:45
#24498
21M
21.00 mi14:46:173:52:2211:0412:47
12:47
#24465
35K
21.75 mi14:54:554:01:0011:058:38
11:32
#24459
23M
23.00 mi15:09:414:15:4611:0714:46
11:48
#24408
24M
24.00 mi15:21:014:27:0611:0811:20
11:20
#24388
40K
24.85 mi15:31:084:37:1311:0910:07
11:50
#24381
25.2M
25.20 mi15:35:364:41:4111:114:28
12:57
#24379
Finish
26.22 mi15:47:154:53:2011:1211:39
11:26
#24401
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi24286142331423324944(Top 94%)14493(Top 95%)14493(Top 1306%)
10K6.21 mi3.10 mi24161+12514165+6814165+6824077(Top 90%)14126(Top 93%)14126(Top 1273%)
15K9.32 mi3.11 mi24520-35914327-16214327-16224944(Top 94%)14493(Top 95%)14493(Top 1306%)
20K12.43 mi3.11 mi24556-3614324+314324+324660(Top 93%)14350(Top 95%)14350(Top 1293%)
Half13.11 mi0.68 mi24576-2014334-1014334-1024626(Top 93%)14327(Top 94%)14327(Top 1291%)
25K15.53 mi2.42 mi24649-7314353-1914353-1924872(Top 93%)14409(Top 95%)14409(Top 1298%)
30K18.64 mi3.11 mi24550+9914295+5814295+5824159(Top 91%)14038(Top 93%)14038(Top 1265%)
20M20.00 mi1.36 mi24498+5214264+3114264+3123882(Top 90%)13848(Top 91%)13848(Top 1248%)
21M21.00 mi1.00 mi24465+3314246+1814246+1823815(Top 89%)13805(Top 91%)13805(Top 1244%)
35K21.75 mi0.75 mi24459+614240+614240+624156(Top 91%)13926(Top 92%)13926(Top 1255%)
23M23.00 mi1.25 mi24408+5114202+3814202+3823695(Top 89%)13722(Top 90%)13722(Top 1236%)
24M24.00 mi1.00 mi24388+2014181+2114181+2123640(Top 89%)13650(Top 90%)13650(Top 1230%)
40K24.85 mi0.85 mi24381+714173+814173+823674(Top 89%)13622(Top 90%)13622(Top 1227%)
25.2M25.20 mi0.35 mi24379+214168+514168+523901(Top 90%)13746(Top 91%)13746(Top 1238%)
Finish26.22 mi1.02 mi24401-2214177-914177-924598(Top 92%)14119(Top 93%)14119(Top 1272%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

24944

Males

14493

M60-64

14493

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

24077

Males

14126

M60-64

14126

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

24944

Males

14493

M60-64

14493

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

24660

Males

14350

M60-64

14350

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

24626

Males

14327

M60-64

14327

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

24872

Males

14409

M60-64

14409

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24159

Males

14038

M60-64

14038

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

23882

Males

13848

M60-64

13848

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

23815

Males

13805

M60-64

13805

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

24156

Males

13926

M60-64

13926

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23695

Males

13722

M60-64

13722

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23640

Males

13650

M60-64

13650

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23674

Males

13622

M60-64

13622

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23901

Males

13746

M60-64

13746

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24598

Males

14119

M60-64

14119

Passing Analysis

Category:
Athletes Passed
925
Passed By
1040
Net Change
-115
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24286
5K → 10K268143+125#24286#24161
10K → 15K37396-359#24161#24520
15K → 20K81117-36#24520#24556
20K → Half2040-20#24556#24576
Half → 25K53126-73#24576#24649
25K → 30K14142+99#24649#24550
30K → 20M7321+52#24550#24498
20M → 21M5522+33#24498#24465
21M → 35K3125+6#24465#24459
35K → 23M6918+51#24459#24408
23M → 24M3717+20#24408#24388
24M → 40K3225+7#24388#24381
40K → 25.2M119+2#24381#24379
25.2M → Finish1739-22#24379#24401
TOTALS9251040-115
📊

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