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MARINE CORPS MARATHON 2025

Grayson Childress

Usaf Academy, CO

Bib: 456 M

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 0.1%
Gender (Male)
#0 / 17709
Top 0.2%
Division (M20-24)
#0 / 1424
Top 0.7%
Race Day Weather
42°/32°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
27 ft elev
5K· 3.11 mi
6:14/mi
19:22
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
5:58/mi
37:55
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
6:00/mi
56:34
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
6:02/mi
1:19:02
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
5:46/mi
1:33:23
↑ 350.2%
30 ft elev
30K· 18.64 mi
5:57/mi
1:51:53
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
5:57/mi
2:10:21
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
5:51/mi
2:28:32
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
5:47/mi
2:36:25
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

Half Splits

1st Half· via 21K
1:19:026:03 /mi+2.1%
2nd Half
1:17:225:52 /mi✓ faster
Negative split — 2.1% faster 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
19:226:143.11 mi19:22
6:14
-
10K
37:556:063.10 mi18:33
5:58
-0:16
15K
56:346:043.11 mi18:39
6:00
+0:02
21K
1:19:026:033.73 mi22:28
6:02
+0:02
25K
1:33:236:012.48 mi14:21
5:46
-0:16
30K
1:51:536:003.11 mi18:30
5:57
+0:11
35K
2:10:216:003.11 mi18:28
5:57
0:00
40K
2:28:325:593.10 mi18:11
5:51
-0:06
Finish(26.22 mi)
2:36:255:581.37 mi7:53
5:47
-0:04
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

5:46 /mi

Average Pace

5:58 /mi

Slowest Pace

6:14 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:17:03

88% of race

Time at Steady Pace

19:22

12% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:58 /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. DistOverallMalesM20-24Seg. OverallSeg. MalesSeg. M20-24
5K3.11 mi666517838124
10K3.10 mi666515+2717014
15K3.11 mi67-166-115838124
21K3.73 mi61+660+615545216
25K2.48 mi56+555+514+1444214
30K3.11 mi52+451+413+1474012
35K3.11 mi48+447+412+131319
40K3.10 mi42+641+610+222225
Finish(26.22 mi)1.37 mi38+437+410993

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.3%
×18story building
+279ft-164ft

Overall

83

Males

81

M20-24

81

5K→10K

3.1 - 6.2 mi

Top 0.2%
×11story building
+103ft-217ft

Overall

71

Males

70

M20-24

70

10K→15K

6.2 - 9.3 mi

Top 0.3%
×3story building
+51ft-55ft

Overall

83

Males

81

M20-24

81

15K→21K

9.3 - 13.1 mi

Top 0.2%
×1story
+20ft-37ft

Overall

54

Males

52

M20-24

52

21K→25K

13.1 - 15.5 mi

Top 0.1%
×2story building
+35ft-8ft

Overall

44

Males

42

M20-24

42

25K→30K

15.5 - 18.6 mi

Top 0.2%
×2story building
+58ft-57ft

Overall

47

Males

40

M20-24

40

30K→35K

18.6 - 21.8 mi

Top 0.1%
×2story building
+98ft-92ft

Overall

31

Males

31

M20-24

31

35K→40K

21.8 - 24.9 mi

Top 0.07%
×2story building
+36ft-53ft

Overall

22

Males

22

M20-24

22

40K→Finish

24.9 - 26.2 mi

Top 0.03%
×5story building
+80ft-24ft

Overall

9

Males

9

M20-24

9

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 5K-#66
5K → 10K
440
#66 → #66
10K → 15K
21-1
#66 → #67
15K → 21K
17*+6
#67 → #61
21K → 25K
16+5
#61 → #56
25K → 30K
04+4
#56 → #52
30K → 35K
04+4
#52 → #48
35K → 40K
17+6
#48 → #42
40K → Finish
04+4
#42 → #38
TOTALS
937*+28
#66 → #38

* 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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Questions or issues regarding timing data?

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