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MARINE CORPS MARATHON 2025

Justin Chiu

Austin, TX

Bib: 18323 M

0:00
0:00
/ mi
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Overall
#0 / 30047
Top 15%
Gender (Male)
#0 / 17709
Top 19%
Division (M25-29)
#0 / 2720
Top 27%
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
9:15/mi
28:44
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
8:36/mi
55:28
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
8:40/mi
1:22:24
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
8:45/mi
1:55:00
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
8:19/mi
2:15:41
↑ 350.2%
30 ft elev
30K· 18.64 mi
8:41/mi
2:42:39
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
8:36/mi
3:09:22
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
8:39/mi
3:36:13
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
8:35/mi
3:47:55
↑ 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
1:55:008:49 /mi+1.8%
2nd Half
1:52:558:34 /mi✓ faster
Negative split — 1.8% 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 mi08:11:2128:449:1528:44
9:15
-
10K
6.21 mi08:38:0555:288:5626:44
8:36
-0:39
15K
9.32 mi09:05:011:22:248:5026:56
8:40
+0:04
21K
13.05 mi09:37:371:55:008:4932:36
8:45
+0:05
25K
15.53 mi09:58:182:15:418:4420:41
8:19
-0:26
30K
18.64 mi10:25:162:42:398:4426:58
8:41
+0:22
35K
21.75 mi10:51:593:09:228:4226:43
8:36
-0:05
40K
24.85 mi11:18:503:36:138:4226:51
8:39
+0:03
Finish
26.22 mi11:30:323:47:558:4211:42
8:35
-0:04

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

8:19 /mi

Average Pace

8:42 /mi

Slowest Pace

9:15 /mi

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Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

3:19:11

87% of race

Time at Steady Pace

28:44

13% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:42 /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 mi08:11:2128:449:1528:44
9:15
#7037
10K
6.21 mi08:38:0555:288:5626:44
8:36
#6845
15K
9.32 mi09:05:011:22:248:5026:56
8:40
#6790
21K
13.05 mi09:37:371:55:008:4932:36
8:45
#6504
25K
15.53 mi09:58:182:15:418:4420:41
8:19
#6123
30K
18.64 mi10:25:162:42:398:4426:58
8:41
#5677
35K
21.75 mi10:51:593:09:228:4226:43
8:36
#5130
40K
24.85 mi11:18:503:36:138:4226:51
8:39
#4597
Finish
26.22 mi11:30:323:47:558:4211:42
8:35
#4425
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
5K3.11 mi3.11 mi703753391103688852351091
10K6.21 mi3.10 mi6845+1925229+1101072+31676852051075
15K9.32 mi3.11 mi6790+555186+431072688852351091
21K13.05 mi3.73 mi6504+2865005+1811056+1660564663992
25K15.53 mi2.48 mi6123+3814728+277999+5748333759812
30K18.64 mi3.11 mi5677+4464377+351923+7645593501762
35K21.75 mi3.11 mi5130+5473931+446827+9634932663577
40K24.85 mi3.10 mi4597+5333511+420757+7030412276498
Finish26.22 mi1.37 mi4425+1723368+143730+2729152172511

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

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

Overall

6888

Males

5235

M25-29

5235

5K→10K

3.1 - 6.2 mi

Top 23%
×11story building
+103ft-217ft

Overall

6768

Males

5205

M25-29

5205

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+51ft-55ft

Overall

6888

Males

5235

M25-29

5235

15K→21K

9.3 - 13.1 mi

Top 20%
×1story
+20ft-37ft

Overall

6056

Males

4663

M25-29

4663

21K→25K

13.1 - 15.5 mi

Top 16%
×2story building
+35ft-8ft

Overall

4833

Males

3759

M25-29

3759

25K→30K

15.5 - 18.6 mi

Top 15%
×2story building
+58ft-57ft

Overall

4559

Males

3501

M25-29

3501

30K→35K

18.6 - 21.8 mi

Top 12%
×2story building
+98ft-92ft

Overall

3493

Males

2663

M25-29

2663

35K→40K

21.8 - 24.9 mi

Top 10%
×2story building
+36ft-53ft

Overall

3041

Males

2276

M25-29

2276

40K→Finish

24.9 - 26.2 mi

Top 10%
×5story building
+80ft-24ft

Overall

2915

Males

2172

M25-29

2172

Passing Analysis

Category:
Athletes Passed
3129*
Passed By
517
Net Change
+2612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7037
5K → 10K394*202+192#7037#6845
10K → 15K215*160+55#6845#6790
15K → 21K359*73+286#6790#6504
21K → 25K3909+381#6504#6123
25K → 30K475*29+446#6123#5677
30K → 35K560*13+547#5677#5130
35K → 40K551*18+533#5130#4597
40K → Finish185*13+172#4597#4425
TOTALS3129*517+2612

* 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