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MARINE CORPS MARATHON 2025

Brendan O'Brien

Denver, CO

Bib: 8746 M

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 46%
Gender (Male)
#0 / 17709
Division (M25-29)
#0 / 2720
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
11:01/mi
34:15
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
10:07/mi
1:05:42
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
10:35/mi
1:38:35
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
10:30/mi
2:17:43
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
10:47/mi
2:44:32
↑ 350.2%
30 ft elev
30K· 18.64 mi
11:25/mi
3:20:01
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
10:20/mi
3:52:06
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
10:31/mi
4:24:46
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
9:57/mi
4:38:20
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

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Half Splits

1st Half· via 21KFaster
Distance13.05 mi
Time2:17:43
Pace10:33 /mi
2nd Half
Distance13.17 mi
Time2:20:36
Pace10:41 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:22:4134:1511:0134:15
11:01
-
10K
6.21 mi08:54:081:05:4210:3431:27
10:07
-0:54
15K
9.32 mi09:27:011:38:3510:3532:53
10:35
+0:28
21K
13.05 mi10:06:092:17:4310:3339:08
10:30
-0:05
25K
15.53 mi10:32:582:44:3210:3526:49
10:47
+0:17
30K
18.64 mi11:08:273:20:0110:4435:29
11:25
+0:38
35K
21.75 mi11:40:323:52:0610:4032:05
10:20
-1:05
40K
24.85 mi12:13:124:24:4610:3932:40
10:31
+0:11
Finish
26.22 mi12:26:464:38:2010:3713:34
9:57
-0:34

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

9:57 /mi

Average Pace

10:37 /mi

Slowest Pace

11:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:36

75% of race

Time at Steady Pace

1:09:44

25% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:37 /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 mi08:22:4134:1511:0134:15
11:01
#18282
10K
6.21 mi08:54:081:05:4210:3431:27
10:07
#17411
15K
9.32 mi09:27:011:38:3510:3532:53
10:35
#17643
21K
13.05 mi10:06:092:17:4310:3339:08
10:30
#16872
25K
15.53 mi10:32:582:44:3210:3526:49
10:47
#16852
30K
18.64 mi11:08:273:20:0110:4435:29
11:25
#16616
35K
21.75 mi11:40:323:52:0610:4032:05
10:20
#15387
40K
24.85 mi12:13:124:24:4610:3932:40
10:31
#14386
Finish
26.22 mi12:26:464:38:2010:3713:34
9:57
#13904
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
5K3.11 mi3.11 mi1828212067214118376(Top 61%)12122(Top 68%)2196(Top 81%)
10K6.21 mi3.10 mi17411+87111638+4292097+4416536(Top 55%)11168(Top 63%)2053(Top 76%)
15K9.32 mi3.11 mi17643-23211756-1182127-3018376(Top 61%)12122(Top 68%)2196(Top 81%)
21K13.05 mi3.73 mi16872+77111313+4432081+4615815(Top 53%)10642(Top 60%)1996(Top 73%)
25K15.53 mi2.48 mi16852+2011251+622075+617264(Top 57%)11208(Top 63%)2050(Top 75%)
30K18.64 mi3.11 mi16616+23611003+2482040+3516462(Top 55%)10561(Top 60%)1951(Top 72%)
35K21.75 mi3.11 mi15387+122910205+7981927+11310392(Top 35%)6890(Top 39%)1387(Top 51%)
40K24.85 mi3.10 mi14386+10019501+7041832+959688(Top 32%)6235(Top 35%)1243(Top 46%)
Finish26.22 mi1.37 mi13904+4829188+3131795+377744(Top 26%)5061(Top 29%)1078(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×18story building
+279ft-164ft

Overall

18376

Males

12122

M25-29

12122

5K→10K

3.1 - 6.2 mi

Top 55%
×11story building
+103ft-217ft

Overall

16536

Males

11168

M25-29

11168

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+51ft-55ft

Overall

18376

Males

12122

M25-29

12122

15K→21K

9.3 - 13.1 mi

Top 53%
×1story
+20ft-37ft

Overall

15815

Males

10642

M25-29

10642

21K→25K

13.1 - 15.5 mi

Top 57%
×2story building
+35ft-8ft

Overall

17264

Males

11208

M25-29

11208

25K→30K

15.5 - 18.6 mi

Top 55%
×2story building
+58ft-57ft

Overall

16462

Males

10561

M25-29

10561

30K→35K

18.6 - 21.8 mi

Top 35%
×2story building
+98ft-92ft

Overall

10392

Males

6890

M25-29

6890

35K→40K

21.8 - 24.9 mi

Top 32%
×2story building
+36ft-53ft

Overall

9688

Males

6235

M25-29

6235

40K→Finish

24.9 - 26.2 mi

Top 26%
×5story building
+80ft-24ft

Overall

7744

Males

5061

M25-29

5061

Passing Analysis

Category:
Athletes Passed
5831*
Passed By
1453
Net Change
+4378
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18282
5K → 10K1021*150+871#18282#17411
10K → 15K323*555-232#17411#17643
15K → 21K887*116+771#17643#16872
21K → 25K330*310+20#16872#16852
25K → 30K522*286+236#16852#16616
30K → 35K1244*15+1229#16616#15387
35K → 40K1017*16+1001#15387#14386
40K → Finish487*5+482#14386#13904
TOTALS5831*1453+4378

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

📊

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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Questions or issues regarding timing data?

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Contact Race Support

Public Race Data

U.S. Marine Corps Community Services (MCCS)

Timing Productions