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MARINE CORPS MARATHON 2025

Chelsea Di Polito

Baltimore, MD

Bib: 9511 F

0:00
0:00
/ mi
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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
11:21/mi
35:15
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
9:41/mi
1:05:21
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
11:46/mi
1:41:54
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
10:09/mi
2:19:45
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
9:49/mi
2:44:08
↑ 350.2%
30 ft elev
30K· 18.64 mi
11:56/mi
3:21:13
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
12:38/mi
4:00:27
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
14:17/mi
4:44:49
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
15:03/mi
5:05:21
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

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Half Splits

1st Half· via 21KFaster
Distance13.05 mi
Time2:19:45
Pace10:43 /mi
2nd Half
Distance13.17 mi
Time2:45:36
Pace12:34 /mi
📊Positive Split: 18.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:53:3335:1511:2135:15
11:21
-
10K
6.21 mi08:23:391:05:2110:3130:06
9:41
-1:40
15K
9.32 mi09:00:121:41:5410:5636:33
11:46
+2:05
21K
13.05 mi09:38:032:19:4510:4337:51
10:09
-1:37
25K
15.53 mi10:02:262:44:0810:3424:23
9:49
-0:20
30K
18.64 mi10:39:313:21:1310:4837:05
11:56
+2:07
35K
21.75 mi11:18:454:00:2711:0339:14
12:38
+0:42
40K
24.85 mi12:03:074:44:4911:2844:22
14:17
+1:39
Finish
26.22 mi12:23:395:05:2111:3920:32
15:03
+0:46

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

9:41 /mi

Average Pace

11:39 /mi

Slowest Pace

15:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:20

30% of race

Time at Steady Pace

2:28:07

49% of race

Time at Slower Pace

1:04:54

21% of race

Average Pace: 11:39 /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 mi07:53:3335:1511:2135:15
11:21
#20344
10K
6.21 mi08:23:391:05:2110:3130:06
9:41
#16991
15K
9.32 mi09:00:121:41:5410:5636:33
11:46
#19857
21K
13.05 mi09:38:032:19:4510:4337:51
10:09
#17792
25K
15.53 mi10:02:262:44:0810:3424:23
9:49
#16676
30K
18.64 mi10:39:313:21:1310:4837:05
11:56
#16961
35K
21.75 mi11:18:454:00:2711:0339:14
12:38
#17339
40K
24.85 mi12:03:074:44:4911:2844:22
14:17
#18278
Finish
26.22 mi12:23:395:05:2111:3920:32
15:03
#18789
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
5K3.11 mi3.11 mi20344718581124116(Top 80%)9012(Top 73%)1044(Top 75%)
10K6.21 mi3.10 mi16991+33535590+1595642+16913662(Top 45%)4137(Top 34%)476(Top 34%)
15K9.32 mi3.11 mi19857-28666933-1343802-16024116(Top 80%)9012(Top 73%)1044(Top 75%)
21K13.05 mi3.73 mi17792+20655965+968678+12413983(Top 47%)4353(Top 35%)509(Top 36%)
25K15.53 mi2.48 mi16676+11165516+449635+4312676(Top 42%)3968(Top 32%)446(Top 32%)
30K18.64 mi3.11 mi16961-2855763-247659-2418300(Top 61%)6749(Top 55%)777(Top 56%)
35K21.75 mi3.11 mi17339-3786084-321690-3118763(Top 62%)7321(Top 59%)816(Top 58%)
40K24.85 mi3.10 mi18278-9396644-560754-6422226(Top 74%)9049(Top 73%)1031(Top 74%)
Finish26.22 mi1.37 mi18789-5116911-267794-4024582(Top 82%)10027(Top 81%)1154(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×18story building
+279ft-164ft

Overall

24116

Females

9012

F35-39

9012

5K→10K

3.1 - 6.2 mi

Top 45%
×11story building
+103ft-217ft

Overall

13662

Females

4137

F35-39

4137

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+51ft-55ft

Overall

24116

Females

9012

F35-39

9012

15K→21K

9.3 - 13.1 mi

Top 47%
×1story
+20ft-37ft

Overall

13983

Females

4353

F35-39

4353

21K→25K

13.1 - 15.5 mi

Top 42%
×2story building
+35ft-8ft

Overall

12676

Females

3968

F35-39

3968

25K→30K

15.5 - 18.6 mi

Top 61%
×2story building
+58ft-57ft

Overall

18300

Females

6749

F35-39

6749

30K→35K

18.6 - 21.8 mi

Top 62%
×2story building
+98ft-92ft

Overall

18763

Females

7321

F35-39

7321

35K→40K

21.8 - 24.9 mi

Top 74%
×2story building
+36ft-53ft

Overall

22226

Females

9049

F35-39

9049

40K→Finish

24.9 - 26.2 mi

Top 82%
×5story building
+80ft-24ft

Overall

24582

Females

10027

F35-39

10027

Passing Analysis

Category:
Athletes Passed
7337*
Passed By
5782
Net Change
+1555
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20344
5K → 10K3364*11+3353#20344#16991
10K → 15K51*2917-2866#16991#19857
15K → 21K2075*10+2065#19857#17792
21K → 25K1124*8+1116#17792#16676
25K → 30K328*613-285#16676#16961
30K → 35K280*658-378#16961#17339
35K → 40K89*1028-939#17339#18278
40K → Finish26*537-511#18278#18789
TOTALS7337*5782+1555

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

📊

Passing Visuals

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