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MARINE CORPS MARATHON 2025

Margarita Isaacs

Cambridge, MA

Bib: 15972 F

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 49%
Gender (Female)
#0 / 12338
Top 41%
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
8:21/mi
25:56
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
8:11/mi
51:20
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
8:30/mi
1:17:46
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
8:30/mi
1:49:29
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
10:55/mi
2:16:36
↑ 350.2%
30 ft elev
30K· 18.64 mi
11:42/mi
2:52:58
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
15:42/mi
3:41:46
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
13:43/mi
4:24:23
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
13:25/mi
4:42:41
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

Half Splits

1st Half· via 21K
1:49:298:23 /mi⚡ faster
2nd Half
2:53:1213:09 /mi+58.2%
Positive split — 58.2% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:58:1425:568:2125:56
8:21
-
10K
6.21 mi08:23:3851:208:1625:24
8:11
-0:10
15K
9.32 mi08:50:041:17:468:2126:26
8:30
+0:19
21K
13.05 mi09:21:471:49:298:2331:43
8:30
0:00
25K
15.53 mi09:48:542:16:368:4827:07
10:55
+2:25
30K
18.64 mi10:25:162:52:589:1736:22
11:42
+0:47
35K
21.75 mi11:14:043:41:4610:1248:48
15:42
+4:00
40K
24.85 mi11:56:414:24:2310:3842:37
13:43
-1:59
Finish
26.22 mi12:14:594:42:4110:4718:18
13:25
-0:18

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

8:11 /mi

Average Pace

10:47 /mi

Slowest Pace

15:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:29

39% of race

Time at Steady Pace

1:03:29

22% of race

Time at Slower Pace

1:49:43

39% of race

Average Pace: 10:47 /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 mi07:58:1425:568:2125:56
8:21
#2642
10K
6.21 mi08:23:3851:208:1625:24
8:11
#3611
15K
9.32 mi08:50:041:17:468:2126:26
8:30
#4206
21K
13.05 mi09:21:471:49:298:2331:43
8:30
#4323
25K
15.53 mi09:48:542:16:368:4827:07
10:55
#6445
30K
18.64 mi10:25:162:52:589:1736:22
11:42
#9073
35K
21.75 mi11:14:043:41:4610:1248:48
15:42
#12932
40K
24.85 mi11:56:414:24:2310:3842:37
13:43
#14286
Finish
26.22 mi12:14:594:42:4110:4718:18
13:25
#14703
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
5K3.11 mi3.11 mi264247913558541323347
10K6.21 mi3.10 mi3611-969683-204180-454569927243
15K9.32 mi3.11 mi4206-595839-156219-3958541323347
21K13.05 mi3.73 mi4323-117868-29230-1148071019274
25K15.53 mi2.48 mi6445-21221494-626384-1541775962991481
30K18.64 mi3.11 mi9073-26282444-950645-2611748863621485
35K21.75 mi3.11 mi12932-38594134-16901044-39927013110832179
40K24.85 mi3.10 mi14286-13544840-7061197-1532048782611788
Finish26.22 mi1.37 mi14703-4175067-2271243-462041181591820

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×18story building
+279ft-164ft

Overall

5854

Females

1323

F25-29

1323

5K→10K

3.1 - 6.2 mi

Top 15%
×11story building
+103ft-217ft

Overall

4569

Females

927

F25-29

927

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+51ft-55ft

Overall

5854

Females

1323

F25-29

1323

15K→21K

9.3 - 13.1 mi

Top 16%
×1story
+20ft-37ft

Overall

4807

Females

1019

F25-29

1019

21K→25K

13.1 - 15.5 mi

Top 59%
×2story building
+35ft-8ft

Overall

17759

Females

6299

F25-29

6299

25K→30K

15.5 - 18.6 mi

Top 58%
×2story building
+58ft-57ft

Overall

17488

Females

6362

F25-29

6362

30K→35K

18.6 - 21.8 mi

Top 90%
×2story building
+98ft-92ft

Overall

27013

Females

11083

F25-29

11083

35K→40K

21.8 - 24.9 mi

Top 68%
×2story building
+36ft-53ft

Overall

20487

Females

8261

F25-29

8261

40K→Finish

24.9 - 26.2 mi

Top 68%
×5story building
+80ft-24ft

Overall

20411

Females

8159

F25-29

8159

Passing Analysis

Category:
Athletes Passed
250*
Passed By
12311
Net Change
-12061
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2642
5K → 10K10*979-969#2642#3611
10K → 15K18*613-595#3611#4206
15K → 21K80*197-117#4206#4323
21K → 25K72129-2122#4323#6445
25K → 30K26*2654-2628#6445#9073
30K → 35K12*3871-3859#9073#12932
35K → 40K58*1412-1354#12932#14286
40K → Finish39*456-417#14286#14703
TOTALS250*12311-12061

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

Passing Charts

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