Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Brock Spence

Arlington, VA

Bib: 33148 M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 30047
Top 44%
Gender (Male)
#0 / 17709
Division (M20-24)
#0 / 1424
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
10:01/mi
31:07
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
9:17/mi
59:56
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
9:50/mi
1:30:30
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
9:58/mi
2:07:41
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
10:06/mi
2:32:46
↑ 350.2%
30 ft elev
30K· 18.64 mi
10:45/mi
3:06:09
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
11:12/mi
3:40:56
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
12:02/mi
4:18:18
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
12:23/mi
4:35:11
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via 21KFaster
Distance13.05 mi
Time2:07:41
Pace9:47 /mi
2nd Half
Distance13.17 mi
Time2:27:30
Pace11:12 /mi
📊Positive Split: 15.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:20:4931:0710:0131:07
10:01
-
10K
6.21 mi08:49:3859:569:3928:49
9:17
-0:44
15K
9.32 mi09:20:121:30:309:4330:34
9:50
+0:33
21K
13.05 mi09:57:232:07:419:4737:11
9:58
+0:08
25K
15.53 mi10:22:282:32:469:5025:05
10:06
+0:08
30K
18.64 mi10:55:513:06:099:5933:23
10:45
+0:39
35K
21.75 mi11:30:383:40:5610:1034:47
11:12
+0:27
40K
24.85 mi12:08:004:18:1810:2437:22
12:02
+0:50
Finish
26.22 mi12:24:534:35:1110:3016:53
12:23
+0:21

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

9:17 /mi

Average Pace

10:30 /mi

Slowest Pace

12:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:49

10% of race

Time at Steady Pace

2:03:57

45% of race

Time at Slower Pace

2:02:25

44% of race

Average Pace: 10:30 /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 mi08:20:4931:0710:0131:07
10:01
#11714
10K
6.21 mi08:49:3859:569:3928:49
9:17
#11383
15K
9.32 mi09:20:121:30:309:4330:34
9:50
#12231
21K
13.05 mi09:57:232:07:419:4737:11
9:58
#12382
25K
15.53 mi10:22:282:32:469:5025:05
10:06
#12557
30K
18.64 mi10:55:513:06:099:5933:23
10:45
#12691
35K
21.75 mi11:30:383:40:5610:1034:47
11:12
#12704
40K
24.85 mi12:08:004:18:1810:2437:22
12:02
#13062
Finish
26.22 mi12:24:534:35:1110:3016:53
12:23
#13309
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM20-24Seg. OverallSeg. MalesSeg. M20-24
5K3.11 mi3.11 mi117148333861138349571975
10K6.21 mi3.10 mi11383+3318159+174857+4111588034842
15K9.32 mi3.11 mi12231-8488675-516902-45138349571975
21K13.05 mi3.73 mi12382-1518732-57911-9130309055944
25K15.53 mi2.48 mi12557-1758784-52911140069448951
30K18.64 mi3.11 mi12691-1348802-18909+2137149080927
35K21.75 mi3.11 mi12704-138670+132894+15137838740881
40K24.85 mi3.10 mi13062-3588745-75895-1151899249919
Finish26.22 mi1.37 mi13309-2478862-117913-1817090103251050

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×18story building
+279ft-164ft

Overall

13834

Males

9571

M20-24

9571

5K→10K

3.1 - 6.2 mi

Top 37%
×11story building
+103ft-217ft

Overall

11158

Males

8034

M20-24

8034

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+51ft-55ft

Overall

13834

Males

9571

M20-24

9571

15K→21K

9.3 - 13.1 mi

Top 43%
×1story
+20ft-37ft

Overall

13030

Males

9055

M20-24

9055

21K→25K

13.1 - 15.5 mi

Top 47%
×2story building
+35ft-8ft

Overall

14006

Males

9448

M20-24

9448

25K→30K

15.5 - 18.6 mi

Top 46%
×2story building
+58ft-57ft

Overall

13714

Males

9080

M20-24

9080

30K→35K

18.6 - 21.8 mi

Top 46%
×2story building
+98ft-92ft

Overall

13783

Males

8740

M20-24

8740

35K→40K

21.8 - 24.9 mi

Top 51%
×2story building
+36ft-53ft

Overall

15189

Males

9249

M20-24

9249

40K→Finish

24.9 - 26.2 mi

Top 57%
×5story building
+80ft-24ft

Overall

17090

Males

10325

M20-24

10325

Passing Analysis

Category:
Athletes Passed
1985*
Passed By
3580
Net Change
-1595
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11714
5K → 10K524*193+331#11714#11383
10K → 15K78*926-848#11383#12231
15K → 21K257*408-151#12231#12382
21K → 25K192*367-175#12382#12557
25K → 30K284*418-134#12557#12691
30K → 35K373*386-13#12691#12704
35K → 40K212*570-358#12704#13062
40K → Finish65*312-247#13062#13309
TOTALS1985*3580-1595

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

Passing Charts

Category:
Loading...

Passing Circle

Loading...

Position Flow

Loading...

Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

U.S. Marine Corps Community Services (MCCS)

Timing Productions