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MARINE CORPS MARATHON 2025

Aidan Underhill

Washington, DC

Bib: 8544 M

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 10%
Gender (Male)
#0 / 17709
Top 14%
Division (M25-29)
#0 / 2720
Top 20%
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
8:39/mi
26:51
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
8:06/mi
52:00
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
8:02/mi
1:16:59
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
8:20/mi
1:48:03
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
7:46/mi
2:07:20
↑ 350.2%
30 ft elev
30K· 18.64 mi
8:07/mi
2:32:33
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
8:24/mi
2:58:40
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
8:58/mi
3:26:33
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
8:41/mi
3:38:24
↑ 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
Time1:48:03
Pace8:17 /mi
2nd Half
Distance13.17 mi
Time1:50:21
Pace8:23 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:49:1526:518:3926:51
8:39
-
10K
6.21 mi08:14:2452:008:2225:09
8:06
-0:33
15K
9.32 mi08:39:231:16:598:1624:59
8:02
-0:04
21K
13.05 mi09:10:271:48:038:1731:04
8:20
+0:18
25K
15.53 mi09:29:442:07:208:1219:17
7:46
-0:34
30K
18.64 mi09:54:572:32:338:1125:13
8:07
+0:21
35K
21.75 mi10:21:042:58:408:1326:07
8:24
+0:17
40K
24.85 mi10:48:573:26:338:1927:53
8:58
+0:34
Finish
26.22 mi11:00:483:38:248:2011:51
8:41
-0:17

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

7:46 /mi

Average Pace

8:20 /mi

Slowest Pace

8:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:49

70% of race

Time at Steady Pace

1:06:35

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:20 /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 mi07:49:1526:518:3926:51
8:39
#3825
10K
6.21 mi08:14:2452:008:2225:09
8:06
#4013
15K
9.32 mi08:39:231:16:598:1624:59
8:02
#3912
21K
13.05 mi09:10:271:48:038:1731:04
8:20
#3944
25K
15.53 mi09:29:442:07:208:1219:17
7:46
#3690
30K
18.64 mi09:54:572:32:338:1125:13
8:07
#3438
35K
21.75 mi10:21:042:58:408:1326:07
8:24
#3238
40K
24.85 mi10:48:573:26:338:1927:53
8:58
#3169
Finish
26.22 mi11:00:483:38:248:2011:51
8:41
#3123
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
5K3.11 mi3.11 mi3825308667337963071687
10K6.21 mi3.10 mi4013-1883227-141700-2742863433736
15K9.32 mi3.11 mi3912+1013155+72686+1437963071687
21K13.05 mi3.73 mi3944-323174-19697-1140583247724
25K15.53 mi2.48 mi3690+2542977+197656+4127842262510
30K18.64 mi3.11 mi3438+2522775+202621+3527212181489
35K21.75 mi3.11 mi3238+2002590+185574+4728972256497
40K24.85 mi3.10 mi3169+692495+95547+2740422935654
Finish26.22 mi1.37 mi3123+462453+42534+1332382377555

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×18story building
+279ft-164ft

Overall

3796

Males

3071

M25-29

3071

5K→10K

3.1 - 6.2 mi

Top 14%
×11story building
+103ft-217ft

Overall

4286

Males

3433

M25-29

3433

10K→15K

6.2 - 9.3 mi

Top 13%
×3story building
+51ft-55ft

Overall

3796

Males

3071

M25-29

3071

15K→21K

9.3 - 13.1 mi

Top 14%
×1story
+20ft-37ft

Overall

4058

Males

3247

M25-29

3247

21K→25K

13.1 - 15.5 mi

Top 9%
×2story building
+35ft-8ft

Overall

2784

Males

2262

M25-29

2262

25K→30K

15.5 - 18.6 mi

Top 9%
×2story building
+58ft-57ft

Overall

2721

Males

2181

M25-29

2181

30K→35K

18.6 - 21.8 mi

Top 10%
×2story building
+98ft-92ft

Overall

2897

Males

2256

M25-29

2256

35K→40K

21.8 - 24.9 mi

Top 13%
×2story building
+36ft-53ft

Overall

4042

Males

2935

M25-29

2935

40K→Finish

24.9 - 26.2 mi

Top 11%
×5story building
+80ft-24ft

Overall

3238

Males

2377

M25-29

2377

Passing Analysis

Category:
Athletes Passed
1383*
Passed By
681
Net Change
+702
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3825
5K → 10K98*286-188#3825#4013
10K → 15K165*64+101#4013#3912
15K → 21K102*134-32#3912#3944
21K → 25K2584+254#3944#3690
25K → 30K271*19+252#3690#3438
30K → 35K244*44+200#3438#3238
35K → 40K167*98+69#3238#3169
40K → Finish78*32+46#3169#3123
TOTALS1383*681+702

* 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