John Kerfoot

Centreville, VA

Bib: 4118 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 15907
Gender (Male)
#0 / 9934
Masters (Masters Men)
#0 / 4070
Division (M40-44)
#0 / 1238
Race Day Weather
43°/33°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:36/mi
32:56
279164
10K· 6.21 mi
10:02/mi
1:04:07
103217
15K· 9.32 mi
11:04/mi
1:38:30
5155
21K· 13.05 mi
10:34/mi
2:17:53
2037
25K· 15.53 mi
9:59/mi
2:42:41
35
30K· 18.64 mi
10:44/mi
3:16:01
5857
35K· 21.75 mi
10:37/mi
3:48:59
9892
40K· 24.85 mi
13:00/mi
4:29:23
3653
Finish· 26.22 mi
16:06/mi
4:51:21
8024
Course Elevation
3237 ft
×20story building
764 ft climb · 717 ft descent

The Course

Half Splits

1st Half· via 21K
2:17:5310:34 /mi⚡ faster
2nd Half
2:33:2711:39 /mi+11.3%
Positive split — 11.3% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
32:5610:363.11 mi32:56
10:36
-
10K
1:04:0710:193.10 mi31:11
10:02
-0:34
15K
1:38:3010:343.11 mi34:23
11:04
+1:02
21K
2:17:5310:343.73 mi39:23
10:34
-0:30
25K
2:42:4110:282.48 mi24:48
9:59
-0:35
30K
3:16:0110:313.11 mi33:20
10:44
+0:45
35K
3:48:5910:323.11 mi32:58
10:37
-0:07
40K
4:29:2310:503.10 mi40:24
13:00
+2:23
Finish(26.22 mi)
4:51:2111:071.37 mi21:58
16:06
+3:06
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:59 /mi

Average Pace

11:07 /mi

Slowest Pace

16:06 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:48:59

79% of race

Time at Slower Pace

1:02:22

21% of race

Average Pace: 11:07 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi998669868561217481901006
10K3.10 mi9924+626979+7847+999426989853
15K3.11 mi10789-8657455-476915-681217481901006
21K3.73 mi10434+3557237+218885+3099086905826
25K2.48 mi9949+4856920+317838+4782795792711
30K3.11 mi9533+4166617+303800+3882015636661
35K3.11 mi9033+5006244+373764+3672164872595
40K3.10 mi9392-3596400-156781-17110216986861
Finish(26.22 mi)1.37 mi10025-6336744-344823-421477892151160

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×18story building
+279ft-164ft

Overall

12174

Males

8190

M40-44

8190

5K→10K

3.1 - 6.2 mi

Top 63%
×11story building
+103ft-217ft

Overall

9942

Males

6989

M40-44

6989

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+51ft-55ft

Overall

12174

Males

8190

M40-44

8190

15K→21K

9.3 - 13.1 mi

Top 62%
×1story
+20ft-37ft

Overall

9908

Males

6905

M40-44

6905

21K→25K

13.1 - 15.5 mi

Top 52%
×2story building
+35ft-8ft

Overall

8279

Males

5792

M40-44

5792

25K→30K

15.5 - 18.6 mi

Top 52%
×2story building
+58ft-57ft

Overall

8201

Males

5636

M40-44

5636

30K→35K

18.6 - 21.8 mi

Top 45%
×2story building
+98ft-92ft

Overall

7216

Males

4872

M40-44

4872

35K→40K

21.8 - 24.9 mi

Top 69%
×2story building
+36ft-53ft

Overall

11021

Males

6986

M40-44

6986

40K→Finish

24.9 - 26.2 mi

Top 93%
×5story building
+80ft-24ft

Overall

14778

Males

9215

M40-44

9215

Passing Analysis

Category:
Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 5K-#9986
5K10K
238300*+62
#9986 #9924
10K15K
92257*-865
#9924 #10789
15K21K
70425*+355
#10789 #10434
21K25K
7492*+485
#10434 #9949
25K30K
39455*+416
#9949 #9533
30K35K
46546*+500
#9533 #9033
35K40K
44889*-359
#9033 #9392
40KFinish
6353-633
#9392 #10025
TOTALS
24052367*-39
#9986 #10025

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Visualized

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

U.S. Marine Corps Community Services (MCCS)

Timing Productions