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MARINE CORPS MARATHON 2025

Sydney Clifford

Brookline, MA

Bib: 20166 F

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 16%
Gender (Female)
#0 / 12338
Top 10%
Division (F20-24)
#0 / 1404
Top 17%
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
9:36/mi
29:48
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
8:53/mi
57:25
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
8:41/mi
1:24:24
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
8:32/mi
1:56:14
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
8:06/mi
2:16:21
↑ 350.2%
30 ft elev
30K· 18.64 mi
8:32/mi
2:42:52
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
8:31/mi
3:09:20
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
9:18/mi
3:38:15
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
8:57/mi
3:50:27
↑ 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
1:56:148:54 /mi+1.7%
2nd Half
1:54:138:40 /mi✓ faster
Negative split — 1.7% faster in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:04:3029:489:3629:48
9:36
-
10K
6.21 mi08:32:0757:259:1427:37
8:53
-0:43
15K
9.32 mi08:59:061:24:249:0326:59
8:41
-0:12
21K
13.05 mi09:30:561:56:148:5431:50
8:32
-0:09
25K
15.53 mi09:51:032:16:218:4720:07
8:06
-0:26
30K
18.64 mi10:17:342:42:528:4426:31
8:32
+0:26
35K
21.75 mi10:44:023:09:208:4226:28
8:31
-0:01
40K
24.85 mi11:12:573:38:158:4728:55
9:18
+0:47
Finish
26.22 mi11:25:093:50:278:4812:12
8:57
-0:21

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

8:06 /mi

Average Pace

8:48 /mi

Slowest Pace

9:36 /mi

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Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

2:39:32

69% of race

Time at Steady Pace

41:07

18% of race

Time at Slower Pace

29:48

13% of race

Average Pace: 8:47 /mi

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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.

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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 mi08:04:3029:489:3629:48
9:36
#9199
10K
6.21 mi08:32:0757:259:1427:37
8:53
#8945
15K
9.32 mi08:59:061:24:249:0326:59
8:41
#8272
21K
13.05 mi09:30:561:56:148:5431:50
8:32
#7106
25K
15.53 mi09:51:032:16:218:4720:07
8:06
#6347
30K
18.64 mi10:17:342:42:528:4426:31
8:32
#5734
35K
21.75 mi10:44:023:09:208:4226:28
8:31
#5121
40K
24.85 mi11:12:573:38:158:4728:55
9:18
#4994
Finish
26.22 mi11:25:093:50:278:4812:12
8:57
#4863
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-24Seg. OverallSeg. FemalesSeg. F20-24
5K3.11 mi3.11 mi9199244444969601676327
10K6.21 mi3.10 mi8945+2542323+121428+2187042228410
15K9.32 mi3.11 mi8272+6732096+227400+2869601676327
21K13.05 mi3.73 mi7106+11661716+380329+7149561067196
25K15.53 mi2.48 mi6347+7591465+251278+513902815156
30K18.64 mi3.11 mi5734+6131324+141251+274009890173
35K21.75 mi3.11 mi5121+6131198+126222+293242746157
40K24.85 mi3.10 mi4994+1271220-22233-1152631575312
Finish26.22 mi1.37 mi4863+1311198+2223340081143245

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×18story building
+279ft-164ft

Overall

6960

Females

1676

F20-24

1676

5K→10K

3.1 - 6.2 mi

Top 29%
×11story building
+103ft-217ft

Overall

8704

Females

2228

F20-24

2228

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+51ft-55ft

Overall

6960

Females

1676

F20-24

1676

15K→21K

9.3 - 13.1 mi

Top 16%
×1story
+20ft-37ft

Overall

4956

Females

1067

F20-24

1067

21K→25K

13.1 - 15.5 mi

Top 13%
×2story building
+35ft-8ft

Overall

3902

Females

815

F20-24

815

25K→30K

15.5 - 18.6 mi

Top 13%
×2story building
+58ft-57ft

Overall

4009

Females

890

F20-24

890

30K→35K

18.6 - 21.8 mi

Top 11%
×2story building
+98ft-92ft

Overall

3242

Females

746

F20-24

746

35K→40K

21.8 - 24.9 mi

Top 18%
×2story building
+36ft-53ft

Overall

5263

Females

1575

F20-24

1575

40K→Finish

24.9 - 26.2 mi

Top 13%
×5story building
+80ft-24ft

Overall

4008

Females

1143

F20-24

1143

Passing Analysis

Category:
Athletes Passed
4787*
Passed By
451
Net Change
+4336
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9199
5K → 10K455*201+254#9199#8945
10K → 15K709*36+673#8945#8272
15K → 21K1169*3+1166#8272#7106
21K → 25K760*1+759#7106#6347
25K → 30K621*8+613#6347#5734
30K → 35K622*9+613#5734#5121
35K → 40K276*149+127#5121#4994
40K → Finish175*44+131#4994#4863
TOTALS4787*451+4336

* 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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Contact Race Support

Public Race Data

U.S. Marine Corps Community Services (MCCS)

Timing Productions