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MARINE CORPS MARATHON 2025

Grey O'Neil

Boulder, CO

Bib: 3666 M

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 42%
Gender (Male)
#0 / 17709
Top 48%
Division (M30-34)
#0 / 2603
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
9:04/mi
28:09
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
8:30/mi
54:33
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
8:57/mi
1:22:20
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
9:15/mi
1:56:51
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
9:16/mi
2:19:54
↑ 350.2%
30 ft elev
30K· 18.64 mi
10:34/mi
2:52:43
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
11:58/mi
3:29:53
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
13:54/mi
4:13:05
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
13:27/mi
4:31:26
↑ 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
1:56:518:57 /mi⚡ faster
2nd Half
2:34:3511:44 /mi+32.3%
Positive split — 32.3% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:05:0428:099:0428:09
9:04
-
10K
6.21 mi08:31:2854:338:4726:24
8:30
-0:34
15K
9.32 mi08:59:151:22:208:5027:47
8:57
+0:27
21K
13.05 mi09:33:461:56:518:5734:31
9:15
+0:18
25K
15.53 mi09:56:492:19:549:0023:03
9:16
+0:01
30K
18.64 mi10:29:382:52:439:1632:49
10:34
+1:18
35K
21.75 mi11:06:483:29:539:3937:10
11:58
+1:24
40K
24.85 mi11:50:004:13:0510:1143:12
13:54
+1:56
Finish
26.22 mi12:08:214:31:2610:2218:21
13:27
-0:27

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

8:30 /mi

Average Pace

10:22 /mi

Slowest Pace

13:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:19:54

52% of race

Time at Slower Pace

2:11:32

48% of race

Average Pace: 10:21 /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.

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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 mi08:05:0428:099:0428:09
9:04
#5907
10K
6.21 mi08:31:2854:338:4726:24
8:30
#5958
15K
9.32 mi08:59:151:22:208:5027:47
8:57
#6751
21K
13.05 mi09:33:461:56:518:5734:31
9:15
#7459
25K
15.53 mi09:56:492:19:549:0023:03
9:16
#7896
30K
18.64 mi10:29:382:52:439:1632:49
10:34
#8989
35K
21.75 mi11:06:483:29:539:3937:10
11:58
#10101
40K
24.85 mi11:50:004:13:0510:1143:12
13:54
#12004
Finish
26.22 mi12:08:214:31:2610:2218:21
13:27
#12593
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
5K3.11 mi3.11 mi59074571825876164941149
10K6.21 mi3.10 mi5958-514626-55835-1061404776863
15K9.32 mi3.11 mi6751-7935161-535934-99876164941149
21K13.05 mi3.73 mi7459-7085627-4661016-82932468501198
25K15.53 mi2.48 mi7896-4375916-2891064-481009372271226
30K18.64 mi3.11 mi8989-10936576-6601154-901291886331423
35K21.75 mi3.11 mi10101-11127163-5871221-6716562102361622
40K24.85 mi3.10 mi12004-19038140-9771359-13821103125741927
Finish26.22 mi1.37 mi12593-5898429-2891393-3420521123111928

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×18story building
+279ft-164ft

Overall

8761

Males

6494

M30-34

6494

5K→10K

3.1 - 6.2 mi

Top 20%
×11story building
+103ft-217ft

Overall

6140

Males

4776

M30-34

4776

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+51ft-55ft

Overall

8761

Males

6494

M30-34

6494

15K→21K

9.3 - 13.1 mi

Top 31%
×1story
+20ft-37ft

Overall

9324

Males

6850

M30-34

6850

21K→25K

13.1 - 15.5 mi

Top 34%
×2story building
+35ft-8ft

Overall

10093

Males

7227

M30-34

7227

25K→30K

15.5 - 18.6 mi

Top 43%
×2story building
+58ft-57ft

Overall

12918

Males

8633

M30-34

8633

30K→35K

18.6 - 21.8 mi

Top 55%
×2story building
+98ft-92ft

Overall

16562

Males

10236

M30-34

10236

35K→40K

21.8 - 24.9 mi

Top 70%
×2story building
+36ft-53ft

Overall

21103

Males

12574

M30-34

12574

40K→Finish

24.9 - 26.2 mi

Top 68%
×5story building
+80ft-24ft

Overall

20521

Males

12311

M30-34

12311

Passing Analysis

Category:
Athletes Passed
657*
Passed By
7343
Net Change
-6686
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5907
5K → 10K204*255-51#5907#5958
10K → 15K33*826-793#5958#6751
15K → 21K77*785-708#6751#7459
21K → 25K97*534-437#7459#7896
25K → 30K95*1188-1093#7896#8989
30K → 35K92*1204-1112#8989#10101
35K → 40K38*1941-1903#10101#12004
40K → Finish21*610-589#12004#12593
TOTALS657*7343-6686

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

Passing Charts

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