Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Jessie Swift

Bretherton

Bib: 87 F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 30047
Top 2%
Gender (Female)
#0 / 12338
Top 0.3%
Division (F30-34)
#0 / 1621
Top 0.6%
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
7:04/mi
21:57
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
6:44/mi
42:53
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
6:45/mi
1:03:50
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
6:58/mi
1:29:50
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
6:47/mi
1:46:42
↑ 350.2%
30 ft elev
30K· 18.64 mi
7:04/mi
2:08:38
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
7:14/mi
2:31:07
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
7:15/mi
2:53:39
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
7:21/mi
3:03:40
↑ 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
Time1:29:50
Pace6:53 /mi
2nd Half
Distance13.17 mi
Time1:33:49
Pace7:07 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:42:3221:577:0421:57
7:04
-
10K
6.21 mi08:03:2842:536:5420:56
6:44
-0:20
15K
9.32 mi08:24:251:03:506:5120:57
6:45
+0:01
21K
13.05 mi08:50:251:29:506:5326:00
6:58
+0:13
25K
15.53 mi09:07:171:46:426:5216:52
6:47
-0:11
30K
18.64 mi09:29:132:08:386:5421:56
7:04
+0:17
35K
21.75 mi09:51:422:31:076:5722:29
7:14
+0:10
40K
24.85 mi10:14:142:53:396:5922:32
7:15
+0:01
Finish
26.22 mi10:24:153:03:407:0110:01
7:21
+0:06

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

6:44 /mi

Average Pace

7:01 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:38

70% of race

Time at Steady Pace

55:02

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:00 /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 mi07:42:3221:577:0421:57
7:04
#516
10K
6.21 mi08:03:2842:536:5420:56
6:44
#578
15K
9.32 mi08:24:251:03:506:5120:57
6:45
#590
21K
13.05 mi08:50:251:29:506:5326:00
6:58
#599
25K
15.53 mi09:07:171:46:426:5216:52
6:47
#601
30K
18.64 mi09:29:132:08:386:5421:56
7:04
#580
35K
21.75 mi09:51:422:31:076:5722:29
7:14
#556
40K
24.85 mi10:14:142:53:396:5922:32
7:15
#529
Finish
26.22 mi10:24:153:03:407:0110:01
7:21
#514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF30-34Seg. OverallSeg. FemalesSeg. F30-34
5K3.11 mi3.11 mi516339622(Top 2%)42(Top 0.3%)11(Top 0.7%)
10K6.21 mi3.10 mi578-6240-713-4657(Top 2%)48(Top 0.4%)13(Top 0.8%)
15K9.32 mi3.11 mi590-1241-113622(Top 2%)42(Top 0.3%)11(Top 0.7%)
21K13.05 mi3.73 mi599-939+211+2660(Top 2%)44(Top 0.4%)10(Top 0.6%)
25K15.53 mi2.48 mi601-243-411654(Top 2%)43(Top 0.3%)9(Top 0.6%)
30K18.64 mi3.11 mi580+2141+211635(Top 2%)52(Top 0.4%)10(Top 0.6%)
35K21.75 mi3.11 mi556+2440+111661(Top 2%)59(Top 0.5%)11(Top 0.7%)
40K24.85 mi3.10 mi529+2739+19+2563(Top 2%)57(Top 0.5%)10(Top 0.6%)
Finish26.22 mi1.37 mi514+15399605(Top 2%)77(Top 0.6%)15(Top 0.9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×18story building
+279ft-164ft

Overall

622

Females

42

F30-34

42

5K→10K

3.1 - 6.2 mi

Top 2%
×11story building
+103ft-217ft

Overall

657

Females

48

F30-34

48

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+51ft-55ft

Overall

622

Females

42

F30-34

42

15K→21K

9.3 - 13.1 mi

Top 2%
×1story
+20ft-37ft

Overall

660

Females

44

F30-34

44

21K→25K

13.1 - 15.5 mi

Top 2%
×2story building
+35ft-8ft

Overall

654

Females

43

F30-34

43

25K→30K

15.5 - 18.6 mi

Top 2%
×2story building
+58ft-57ft

Overall

635

Females

52

F30-34

52

30K→35K

18.6 - 21.8 mi

Top 2%
×2story building
+98ft-92ft

Overall

661

Females

59

F30-34

59

35K→40K

21.8 - 24.9 mi

Top 2%
×2story building
+36ft-53ft

Overall

563

Females

57

F30-34

57

40K→Finish

24.9 - 26.2 mi

Top 2%
×5story building
+80ft-24ft

Overall

605

Females

77

F30-34

77

Passing Analysis

Category:
Athletes Passed
175*
Passed By
173
Net Change
+2
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#516
5K → 10K769-62#516#578
10K → 15K1224-12#578#590
15K → 21K17*26-9#590#599
21K → 25K1517-2#599#601
25K → 30K32*11+21#601#580
30K → 35K3713+24#580#556
35K → 40K369+27#556#529
40K → Finish19*4+15#529#514
TOTALS175*173+2

* 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