Marine Corps Marathon logo
MARINE CORPS MARATHON 2025

Tom Byers

Liverpool, NY

Bib: 171 M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 30047
Top 1%
Gender (Male)
#0 / 17709
Top 2%
Masters (Masters Men)
#0 / 8330
Top 0.6%
Division (M40-44)
#0 / 2340
Top 1%
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
6:47/mi
21:06
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
6:18/mi
40:39
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
6:21/mi
1:00:24
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
6:51/mi
1:25:55
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
6:31/mi
1:42:07
↑ 350.2%
30 ft elev
30K· 18.64 mi
6:47/mi
2:03:11
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
7:06/mi
2:25:14
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
7:06/mi
2:47:18
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
7:18/mi
2:57:16
↑ 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
Time1:25:55
Pace6:35 /mi
2nd Half
Distance13.17 mi
Time1:31:20
Pace6:56 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi07:41:3921:066:4721:06
6:47
-
10K
6.21 mi08:01:1240:396:3319:33
6:18
-0:29
15K
9.32 mi08:20:571:00:246:2919:45
6:21
+0:03
21K
13.05 mi08:46:281:25:556:3525:31
6:51
+0:30
25K
15.53 mi09:02:401:42:076:3416:12
6:31
-0:20
30K
18.64 mi09:23:442:03:116:3621:04
6:47
+0:16
35K
21.75 mi09:45:472:25:146:4122:03
7:06
+0:19
40K
24.85 mi10:07:512:47:186:4422:04
7:06
0:00
Finish
26.22 mi10:17:492:57:166:469:58
7:18
+0:12

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

6:18 /mi

Average Pace

6:46 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:11

69% of race

Time at Steady Pace

54:05

31% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi07:41:3921:066:4721:06
6:47
#270
10K
6.21 mi08:01:1240:396:3319:33
6:18
#244
15K
9.32 mi08:20:571:00:246:2919:45
6:21
#226
21K
13.05 mi08:46:281:25:556:3525:31
6:51
#264
25K
15.53 mi09:02:401:42:076:3416:12
6:31
#276
30K
18.64 mi09:23:442:03:116:3621:04
6:47
#283
35K
21.75 mi09:45:472:25:146:4122:03
7:06
#302
40K
24.85 mi10:07:512:47:186:4422:04
7:06
#318
Finish
26.22 mi10:17:492:57:166:469:58
7:18
#317
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi27025719208(Top 0.7%)200(Top 1%)15(Top 0.6%)
10K6.21 mi3.10 mi244+26234+2318+1205(Top 0.7%)200(Top 1%)15(Top 0.6%)
15K9.32 mi3.11 mi226+18216+1816+2208(Top 0.7%)200(Top 1%)15(Top 0.6%)
21K13.05 mi3.73 mi264-38255-3918-2515(Top 2%)484(Top 3%)49(Top 2%)
25K15.53 mi2.48 mi276-12267-1220-2356(Top 1%)336(Top 2%)30(Top 1%)
30K18.64 mi3.11 mi283-7275-823-3378(Top 1%)354(Top 2%)33(Top 1%)
35K21.75 mi3.11 mi302-19292-1724-1546(Top 2%)505(Top 3%)58(Top 2%)
40K24.85 mi3.10 mi318-16303-1126-2446(Top 1%)412(Top 2%)52(Top 2%)
Finish26.22 mi1.37 mi317+1301+228-2558(Top 2%)489(Top 3%)50(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.7%
×18story building
+279ft-164ft

Overall

208

Males

200

M40-44

200

5K→10K

3.1 - 6.2 mi

Top 0.7%
×11story building
+103ft-217ft

Overall

205

Males

200

M40-44

200

10K→15K

6.2 - 9.3 mi

Top 0.7%
×3story building
+51ft-55ft

Overall

208

Males

200

M40-44

200

15K→21K

9.3 - 13.1 mi

Top 2%
×1story
+20ft-37ft

Overall

515

Males

484

M40-44

484

21K→25K

13.1 - 15.5 mi

Top 1%
×2story building
+35ft-8ft

Overall

356

Males

336

M40-44

336

25K→30K

15.5 - 18.6 mi

Top 1%
×2story building
+58ft-57ft

Overall

378

Males

354

M40-44

354

30K→35K

18.6 - 21.8 mi

Top 2%
×2story building
+98ft-92ft

Overall

546

Males

505

M40-44

505

35K→40K

21.8 - 24.9 mi

Top 1%
×2story building
+36ft-53ft

Overall

446

Males

412

M40-44

412

40K→Finish

24.9 - 26.2 mi

Top 2%
×5story building
+80ft-24ft

Overall

558

Males

489

M40-44

489

Passing Analysis

Category:
Athletes Passed
93*
Passed By
140
Net Change
-47
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#270
5K → 10K304+26#270#244
10K → 15K202+18#244#226
15K → 21K5*43-38#226#264
21K → 25K416-12#264#276
25K → 30K7*14-7#276#283
30K → 35K827-19#283#302
35K → 40K723-16#302#318
40K → Finish12*11+1#318#317
TOTALS93*140-47

* 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