Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Tsao-Chuen Ku

Austin, TX

Bib: 19672 F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 30047
Gender (Female)
#0 / 12338
Masters (Masters Women)
#0 / 5451
Top 44%
Division (F55-59)
#0 / 873
Top 37%
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
11:04/mi
34:23
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
10:39/mi
1:07:27
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
10:56/mi
1:41:26
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
11:29/mi
2:24:16
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
11:14/mi
2:52:12
↑ 350.2%
30 ft elev
30K· 18.64 mi
13:30/mi
3:34:08
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
11:30/mi
4:09:52
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
12:17/mi
4:48:01
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
12:37/mi
5:05:14
↑ 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

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via 21KFaster
Distance13.05 mi
Time2:24:16
Pace11:03 /mi
2nd Half
Distance13.17 mi
Time2:40:57
Pace12:13 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:12:5334:2311:0434:23
11:04
-
10K
6.21 mi08:45:571:07:2710:5133:04
10:39
-0:25
15K
9.32 mi09:19:561:41:2610:5333:59
10:56
+0:17
21K
13.05 mi10:02:462:24:1611:0342:50
11:29
+0:33
25K
15.53 mi10:30:422:52:1211:0527:56
11:14
-0:15
30K
18.64 mi11:12:383:34:0811:2941:56
13:30
+2:16
35K
21.75 mi11:48:224:09:5211:2935:44
11:30
-2:00
40K
24.85 mi12:26:314:48:0111:3538:09
12:17
+0:47
Finish
26.22 mi12:43:445:05:1411:3917:13
12:37
+0:20

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

10:39 /mi

Average Pace

11:39 /mi

Slowest Pace

13:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:07:03

22% of race

Time at Steady Pace

2:20:53

46% of race

Time at Slower Pace

1:37:18

32% of race

Average Pace: 11:38 /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 mi08:12:5334:2311:0434:23
11:04
#18545
10K
6.21 mi08:45:571:07:2710:5133:04
10:39
#19230
15K
9.32 mi09:19:561:41:2610:5333:59
10:56
#19583
21K
13.05 mi10:02:462:24:1611:0342:50
11:29
#19727
25K
15.53 mi10:30:422:52:1211:0527:56
11:14
#19484
30K
18.64 mi11:12:383:34:0811:2941:56
13:30
#20382
35K
21.75 mi11:48:224:09:5211:2935:44
11:30
#19372
40K
24.85 mi12:26:314:48:0111:3538:09
12:17
#18823
Finish
26.22 mi12:43:445:05:1411:3917:13
12:37
#18758
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi18545634228520414(Top 68%)7212(Top 58%)348(Top 40%)
10K6.21 mi3.10 mi19230-6856652-310309-2419995(Top 67%)6991(Top 57%)336(Top 39%)
15K9.32 mi3.11 mi19583-3536820-168324-1520414(Top 68%)7212(Top 58%)348(Top 40%)
21K13.05 mi3.73 mi19727-1446888-68321+320534(Top 68%)7353(Top 60%)352(Top 41%)
25K15.53 mi2.48 mi19484+2436848+40318+319040(Top 63%)6913(Top 56%)316(Top 37%)
30K18.64 mi3.11 mi20382-8987387-539361-4323075(Top 77%)9067(Top 73%)516(Top 60%)
35K21.75 mi3.11 mi19372+10106993+394330+3114935(Top 50%)5576(Top 45%)223(Top 26%)
40K24.85 mi3.10 mi18823+5496890+103318+1216052(Top 53%)6322(Top 51%)275(Top 32%)
Finish26.22 mi1.37 mi18758+656893-3317+117934(Top 60%)7131(Top 58%)322(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×18story building
+279ft-164ft

Overall

20414

Females

7212

F55-59

7212

5K→10K

3.1 - 6.2 mi

Top 67%
×11story building
+103ft-217ft

Overall

19995

Females

6991

F55-59

6991

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+51ft-55ft

Overall

20414

Females

7212

F55-59

7212

15K→21K

9.3 - 13.1 mi

Top 68%
×1story
+20ft-37ft

Overall

20534

Females

7353

F55-59

7353

21K→25K

13.1 - 15.5 mi

Top 63%
×2story building
+35ft-8ft

Overall

19040

Females

6913

F55-59

6913

25K→30K

15.5 - 18.6 mi

Top 77%
×2story building
+58ft-57ft

Overall

23075

Females

9067

F55-59

9067

30K→35K

18.6 - 21.8 mi

Top 50%
×2story building
+98ft-92ft

Overall

14935

Females

5576

F55-59

5576

35K→40K

21.8 - 24.9 mi

Top 53%
×2story building
+36ft-53ft

Overall

16052

Females

6322

F55-59

6322

40K→Finish

24.9 - 26.2 mi

Top 60%
×5story building
+80ft-24ft

Overall

17934

Females

7131

F55-59

7131

Passing Analysis

Category:
Athletes Passed
3480*
Passed By
3693
Net Change
-213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18545
5K → 10K228*913-685#18545#19230
10K → 15K324*677-353#19230#19583
15K → 21K480*624-144#19583#19727
21K → 25K460*217+243#19727#19484
25K → 30K150*1048-898#19484#20382
30K → 35K1035*25+1010#20382#19372
35K → 40K647*98+549#19372#18823
40K → Finish156*91+65#18823#18758
TOTALS3480*3693-213

* 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