Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Kathryn Cormier

Boston, MA

Bib: 33280 F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 30047
Gender (Female)
#0 / 12338
Division (F35-39)
#0 / 1413
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
12:32/mi
38:56
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
12:05/mi
1:16:28
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
12:29/mi
1:55:15
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
13:33/mi
2:45:47
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
13:50/mi
3:20:11
↑ 350.2%
30 ft elev
30K· 18.64 mi
16:43/mi
4:12:08
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
17:33/mi
5:06:40
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
18:29/mi
6:04:04
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
18:03/mi
6:28:41
↑ 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 on this race

A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.

Half Splits

1st Half· via 21KFaster
Distance13.05 mi
Time2:45:47
Pace12:42 /mi
2nd Half
Distance13.17 mi
Time3:42:54
Pace16:55 /mi
📊Positive Split: 34.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:39:2438:5612:3238:56
12:32
-
10K
6.21 mi09:16:561:16:2812:1837:32
12:05
-0:27
15K
9.32 mi09:55:431:55:1512:2238:47
12:29
+0:24
21K
13.05 mi10:46:152:45:4712:4250:32
13:33
+1:04
25K
15.53 mi11:20:393:20:1112:5334:24
13:50
+0:17
30K
18.64 mi12:12:364:12:0813:3251:57
16:43
+2:53
35K
21.75 mi13:07:085:06:4014:0654:32
17:33
+0:50
40K
24.85 mi14:04:326:04:0414:3957:24
18:29
+0:56
Finish
26.22 mi14:29:096:28:4114:5024:37
18:03
-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

12:05 /mi

Average Pace

14:50 /mi

Slowest Pace

18:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:15

30% of race

Time at Steady Pace

1:24:56

22% of race

Time at Slower Pace

3:08:30

48% of race

Average Pace: 14:49 /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 mi08:39:2438:5612:3238:56
12:32
#26124
10K
6.21 mi09:16:561:16:2812:1837:32
12:05
#26409
15K
9.32 mi09:55:431:55:1512:2238:47
12:29
#26405
21K
13.05 mi10:46:152:45:4712:4250:32
13:33
#26623
25K
15.53 mi11:20:393:20:1112:5334:24
13:50
#26703
30K
18.64 mi12:12:364:12:0813:3251:57
16:43
#27525
35K
21.75 mi13:07:085:06:4014:0654:32
17:33
#28146
40K
24.85 mi14:04:326:04:0414:3957:24
18:29
#28446
Finish
26.22 mi14:29:096:28:4114:5024:37
18:03
#28487
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
5K3.11 mi3.11 mi2612410040116226404(Top 88%)10217(Top 83%)1193(Top 85%)
10K6.21 mi3.10 mi26409-28510205-1651184-2226681(Top 89%)10375(Top 84%)1203(Top 86%)
15K9.32 mi3.11 mi26405+410186+191187-326404(Top 88%)10217(Top 83%)1193(Top 85%)
21K13.05 mi3.73 mi26623-21810336-1501213-2626780(Top 89%)10540(Top 85%)1235(Top 88%)
25K15.53 mi2.48 mi26703-8010438-1021216-326666(Top 89%)10700(Top 87%)1226(Top 88%)
30K18.64 mi3.11 mi27525-82210963-5251274-5829154(Top 97%)11952(Top 97%)1355(Top 97%)
35K21.75 mi3.11 mi28146-62111329-3661317-4329193(Top 97%)12018(Top 97%)1371(Top 98%)
40K24.85 mi3.10 mi28446-30011515-1861339-2228954(Top 96%)11902(Top 96%)1356(Top 97%)
Finish26.22 mi1.37 mi28487-4111544-291340-128448(Top 95%)11680(Top 95%)1346(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×18story building
+279ft-164ft

Overall

26404

Females

10217

F35-39

10217

5K→10K

3.1 - 6.2 mi

Top 89%
×11story building
+103ft-217ft

Overall

26681

Females

10375

F35-39

10375

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+51ft-55ft

Overall

26404

Females

10217

F35-39

10217

15K→21K

9.3 - 13.1 mi

Top 89%
×1story
+20ft-37ft

Overall

26780

Females

10540

F35-39

10540

21K→25K

13.1 - 15.5 mi

Top 89%
×2story building
+35ft-8ft

Overall

26666

Females

10700

F35-39

10700

25K→30K

15.5 - 18.6 mi

Top 97%
×2story building
+58ft-57ft

Overall

29154

Females

11952

F35-39

11952

30K→35K

18.6 - 21.8 mi

Top 97%
×2story building
+98ft-92ft

Overall

29193

Females

12018

F35-39

12018

35K→40K

21.8 - 24.9 mi

Top 96%
×2story building
+36ft-53ft

Overall

28954

Females

11902

F35-39

11902

40K→Finish

24.9 - 26.2 mi

Top 95%
×5story building
+80ft-24ft

Overall

28448

Females

11680

F35-39

11680

Passing Analysis

Category:
Athletes Passed
1367*
Passed By
3730
Net Change
-2363
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26124
5K → 10K250*535-285#26124#26409
10K → 15K329*325+4#26409#26405
15K → 21K319*537-218#26405#26623
21K → 25K224*304-80#26623#26703
25K → 30K86*908-822#26703#27525
30K → 35K56*677-621#27525#28146
35K → 40K65*365-300#28146#28446
40K → Finish38*79-41#28446#28487
TOTALS1367*3730-2363

* 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