Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Stephanie Son

Denver, CO

Bib: 30409 F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 30047
Gender (Female)
#0 / 12338
Division (F25-29)
#0 / 2322
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
11:50/mi
36:46
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
11:08/mi
1:11:22
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
10:56/mi
1:45:21
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
11:22/mi
2:27:44
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
11:56/mi
2:57:23
↑ 350.2%
30 ft elev
30K· 18.64 mi
12:35/mi
3:36:29
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
12:53/mi
4:16:30
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
11:44/mi
4:52:56
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
11:18/mi
5:08:21
↑ 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
Time2:27:44
Pace11:19 /mi
2nd Half
Distance13.17 mi
Time2:40:37
Pace12:12 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:25:4936:4611:5036:46
11:50
-
10K
6.21 mi09:00:251:11:2211:2934:36
11:08
-0:42
15K
9.32 mi09:34:241:45:2111:1833:59
10:56
-0:12
21K
13.05 mi10:16:472:27:4411:1942:23
11:22
+0:26
25K
15.53 mi10:46:262:57:2311:2529:39
11:56
+0:34
30K
18.64 mi11:25:323:36:2911:3739:06
12:35
+0:39
35K
21.75 mi12:05:334:16:3011:4840:01
12:53
+0:18
40K
24.85 mi12:41:594:52:5611:4736:26
11:44
-1:09
Finish
26.22 mi12:57:245:08:2111:4615:25
11:18
-0:26

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

10:56 /mi

Average Pace

11:46 /mi

Slowest Pace

12:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:49:14

74% of race

Time at Steady Pace

1:19:07

26% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:46 /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 mi08:25:4936:4611:5036:46
11:50
#23066
10K
6.21 mi09:00:251:11:2211:2934:36
11:08
#22935
15K
9.32 mi09:34:241:45:2111:1833:59
10:56
#22010
21K
13.05 mi10:16:472:27:4411:1942:23
11:22
#21167
25K
15.53 mi10:46:262:57:2311:2529:39
11:56
#21149
30K
18.64 mi11:25:323:36:2911:3739:06
12:35
#20959
35K
21.75 mi12:05:334:16:3011:4840:01
12:53
#20730
40K
24.85 mi12:41:594:52:5611:4736:26
11:44
#19699
Finish
26.22 mi12:57:245:08:2111:4615:25
11:18
#19279
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
5K3.11 mi3.11 mi230668501184820430(Top 68%)7218(Top 59%)1627(Top 70%)
10K6.21 mi3.10 mi22935+1318417+841833+1522922(Top 76%)8424(Top 68%)1834(Top 79%)
15K9.32 mi3.11 mi22010+9257964+4531775+5820430(Top 68%)7218(Top 59%)1627(Top 70%)
21K13.05 mi3.73 mi21167+8437597+3671703+7220025(Top 67%)7127(Top 58%)1610(Top 69%)
25K15.53 mi2.48 mi21149+187645-481722-1921417(Top 71%)8059(Top 65%)1776(Top 77%)
30K18.64 mi3.11 mi20959+1907657-121723-120413(Top 68%)7747(Top 63%)1737(Top 75%)
35K21.75 mi3.11 mi20730+2297642+151726-319519(Top 65%)7675(Top 62%)1708(Top 74%)
40K24.85 mi3.10 mi19699+10317290+3521661+6514187(Top 47%)5485(Top 44%)1299(Top 56%)
Finish26.22 mi1.37 mi19279+4207136+1541632+2913133(Top 44%)5056(Top 41%)1268(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×18story building
+279ft-164ft

Overall

20430

Females

7218

F25-29

7218

5K→10K

3.1 - 6.2 mi

Top 76%
×11story building
+103ft-217ft

Overall

22922

Females

8424

F25-29

8424

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+51ft-55ft

Overall

20430

Females

7218

F25-29

7218

15K→21K

9.3 - 13.1 mi

Top 67%
×1story
+20ft-37ft

Overall

20025

Females

7127

F25-29

7127

21K→25K

13.1 - 15.5 mi

Top 71%
×2story building
+35ft-8ft

Overall

21417

Females

8059

F25-29

8059

25K→30K

15.5 - 18.6 mi

Top 68%
×2story building
+58ft-57ft

Overall

20413

Females

7747

F25-29

7747

30K→35K

18.6 - 21.8 mi

Top 65%
×2story building
+98ft-92ft

Overall

19519

Females

7675

F25-29

7675

35K→40K

21.8 - 24.9 mi

Top 47%
×2story building
+36ft-53ft

Overall

14187

Females

5485

F25-29

5485

40K→Finish

24.9 - 26.2 mi

Top 44%
×5story building
+80ft-24ft

Overall

13133

Females

5056

F25-29

5056

Passing Analysis

Category:
Athletes Passed
5294*
Passed By
1507
Net Change
+3787
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23066
5K → 10K542*411+131#23066#22935
10K → 15K983*58+925#22935#22010
15K → 21K985*142+843#22010#21167
21K → 25K385*367+18#21167#21149
25K → 30K466*276+190#21149#20959
30K → 35K445*216+229#20959#20730
35K → 40K1059*28+1031#20730#19699
40K → Finish429*9+420#19699#19279
TOTALS5294*1507+3787

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

📊

Passing Visuals

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