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MARINE CORPS MARATHON 2025

Clinton Firstbrook IV

Quantico, VA

Bib: 22951 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 30047
Gender (Male)
#0 / 17709
Masters (Masters Men)
#0 / 8330
Top 47%
Division (M40-44)
#0 / 2340
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
11:00/mi
34:09
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
10:04/mi
1:05:24
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
10:13/mi
1:37:10
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
10:29/mi
2:16:14
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
10:29/mi
2:42:16
↑ 350.2%
30 ft elev
30K· 18.64 mi
11:27/mi
3:17:49
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
11:12/mi
3:52:36
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
11:39/mi
4:28:47
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
12:29/mi
4:45:48
↑ 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
2:16:1410:26 /mi⚡ faster
2nd Half
2:29:3411:21 /mi+9.8%
Positive split — 9.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
34:0911:003.11 mi34:09
11:00
-
10K
1:05:2410:323.10 mi31:15
10:04
-0:56
15K
1:37:1010:253.11 mi31:46
10:13
+0:09
21K
2:16:1410:263.73 mi39:04
10:29
+0:16
25K
2:42:1610:272.48 mi26:02
10:29
0:00
30K
3:17:4910:373.11 mi35:33
11:27
+0:58
35K
3:52:3610:423.11 mi34:47
11:12
-0:15
40K
4:28:4710:493.10 mi36:11
11:39
+0:27
Finish(26.22 mi)
4:45:4810:551.37 mi17:01
12:29
+0:50
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

10:04 /mi

Average Pace

10:55 /mi

Slowest Pace

12:29 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:08:07

45% of race

Time at Steady Pace

1:08:56

24% of race

Time at Slower Pace

1:28:45

31% of race

Average Pace: 10:54 /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 mi1807311960154916095108651413
10K3.10 mi17068+100511444+5161491+5816068108891407
15K3.11 mi16630+43811216+2281462+2916095108651413
21K3.73 mi16140+49010908+3081422+4015702105901386
25K2.48 mi16002+13810777+1311414+815800104491361
30K3.11 mi1600210673+1041405+916534106001387
35K3.11 mi15484+51810254+4191355+501379487471130
40K3.10 mi15139+3459937+3171304+511392685571103
Finish(26.22 mi)1.37 mi15307-1689981-441302+217476105411367

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×18story building
+279ft-164ft

Overall

16095

Males

10865

M40-44

10865

5K→10K

3.1 - 6.2 mi

Top 53%
×11story building
+103ft-217ft

Overall

16068

Males

10889

M40-44

10889

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+51ft-55ft

Overall

16095

Males

10865

M40-44

10865

15K→21K

9.3 - 13.1 mi

Top 52%
×1story
+20ft-37ft

Overall

15702

Males

10590

M40-44

10590

21K→25K

13.1 - 15.5 mi

Top 53%
×2story building
+35ft-8ft

Overall

15800

Males

10449

M40-44

10449

25K→30K

15.5 - 18.6 mi

Top 55%
×2story building
+58ft-57ft

Overall

16534

Males

10600

M40-44

10600

30K→35K

18.6 - 21.8 mi

Top 46%
×2story building
+98ft-92ft

Overall

13794

Males

8747

M40-44

8747

35K→40K

21.8 - 24.9 mi

Top 46%
×2story building
+36ft-53ft

Overall

13926

Males

8557

M40-44

8557

40K→Finish

24.9 - 26.2 mi

Top 58%
×5story building
+80ft-24ft

Overall

17476

Males

10541

M40-44

10541

Passing Analysis

Category:
Passed
4436*
Passed By
1670
Net Change
+2766
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18073
5K → 10K1116*111+1005#18073#17068
10K → 15K592*154+438#17068#16630
15K → 21K688*198+490#16630#16140
21K → 25K371*233+138#16140#16002
25K → 30K393*3930#16002#16002
30K → 35K681*163+518#16002#15484
35K → 40K516*171+345#15484#15139
40K → Finish79*247-168#15139#15307
TOTALS4436*1670+2766

* 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