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MARINE CORPS MARATHON 2025

Catherine Sostak

Hartsville, SC

Bib: 12123 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 30047
Top 48%
Gender (Female)
#0 / 12338
Top 40%
Masters (Masters Women)
#0 / 5451
Top 29%
Division (F40-44)
#0 / 1527
Top 37%
Race Day Weather
42°/32°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:23/mi
32:17
↑ 279↓ 164
10K· 6.21 mi
9:56/mi
1:03:09
↑ 103↓ 217
15K· 9.32 mi
9:50/mi
1:33:42
↑ 51↓ 55
21K· 13.05 mi
10:07/mi
2:11:24
↑ 20↓ 37
25K· 15.53 mi
10:12/mi
2:36:44
↑ 35
30K· 18.64 mi
11:12/mi
3:11:31
↑ 58↓ 57
35K· 21.75 mi
11:44/mi
3:47:59
↑ 98↓ 92
40K· 24.85 mi
11:44/mi
4:24:26
↑ 36↓ 53
Finish· 26.22 mi
12:11/mi
4:41:03
↑ 80↓ 24
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

Half Splits

1st Half· via 21K
2:11:2410:04 /mi⚡ faster
2nd Half
2:29:3911:22 /mi+13.9%
Positive split — 13.9% 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
32:1710:233.11 mi32:17
10:23
-
10K
1:03:0910:103.10 mi30:52
9:56
-0:27
15K
1:33:4210:033.11 mi30:33
9:50
-0:06
21K
2:11:2410:043.73 mi37:42
10:07
+0:17
25K
2:36:4410:052.48 mi25:20
10:12
+0:05
30K
3:11:3110:163.11 mi34:47
11:12
+1:00
35K
3:47:5910:293.11 mi36:28
11:44
+0:32
40K
4:24:2610:383.10 mi36:27
11:44
0:00
Finish(26.22 mi)
4:41:0310:441.37 mi16:37
12:11
+0:27
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:50 /mi

Average Pace

10:44 /mi

Slowest Pace

12:11 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:01:25

22% of race

Time at Steady Pace

1:35:19

34% of race

Time at Slower Pace

2:04:19

44% of race

Average Pace: 10:43 /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. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi141034351509138264261494
10K3.10 mi14636-5334559-208540-31152694825584
15K3.11 mi14257+3794418+141521+19138264261494
21K3.73 mi13988+2694334+84513+8138094290511
25K2.48 mi13976+124375-41508+5144884769530
30K3.11 mi14173-1974537-162528-20155235472620
35K3.11 mi14372-1994735-198550-22158345983680
40K3.10 mi14296+764844-109557-7142155496622
Finish(26.22 mi)1.37 mi14423-1274945-101563-6164006461730

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

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

Overall

13826

Females

4261

F40-44

4261

5K→10K

3.1 - 6.2 mi

Top 51%
×11story building
+103ft-217ft

Overall

15269

Females

4825

F40-44

4825

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+51ft-55ft

Overall

13826

Females

4261

F40-44

4261

15K→21K

9.3 - 13.1 mi

Top 46%
×1story
+20ft-37ft

Overall

13809

Females

4290

F40-44

4290

21K→25K

13.1 - 15.5 mi

Top 48%
×2story building
+35ft-8ft

Overall

14488

Females

4769

F40-44

4769

25K→30K

15.5 - 18.6 mi

Top 52%
×2story building
+58ft-57ft

Overall

15523

Females

5472

F40-44

5472

30K→35K

18.6 - 21.8 mi

Top 53%
×2story building
+98ft-92ft

Overall

15834

Females

5983

F40-44

5983

35K→40K

21.8 - 24.9 mi

Top 47%
×2story building
+36ft-53ft

Overall

14215

Females

5496

F40-44

5496

40K→Finish

24.9 - 26.2 mi

Top 55%
×5story building
+80ft-24ft

Overall

16400

Females

6461

F40-44

6461

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 5K-#14103
5K → 10K
723190*-533
#14103 → #14636
10K → 15K
141520*+379
#14636 → #14257
15K → 21K
220489*+269
#14257 → #13988
21K → 25K
269281*+12
#13988 → #13976
25K → 30K
490293*-197
#13976 → #14173
30K → 35K
517318*-199
#14173 → #14372
35K → 40K
307383*+76
#14372 → #14296
40K → Finish
21891*-127
#14296 → #14423
TOTALS
28852565*-320
#14103 → #14423

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

Passing Visualized

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