calendar_today 10 Oct, 2026 – 11 Oct, 2026
directions_run Running
language Official Website
sell $25.00 – $155.00
Get ready for The Mammoth Race Glen Rose FALL migration. This multi-distance trail run welcomes families and runners of all skill levels. Enjoy the Hill Country that surrounds this stunning ONE THOUSAND acre ranch. We can't wait to see you out there!
The Mammoth - Glen Rose, TX is a multi-distance trail running event located on the trails High Hope Ranch and Eco-Retreat. Distances offered are 100K, 50K, 25K, 10K, 5K and The Mighty Mammoth 1K FUN RUN. There will be two sections of the course: a 3.5-mile loop and a 7-mile loop. Both loops combined equal a 10.5 mile lap. The event will run from 7 am on Saturday morning until 9 am on Sunday morning. The starting line and Main Race Hub will be the main lodge on the Ranch. There are two aid stations on course: the main lodge at the starting line, and Matazamo ranch house. Aid stations are approximately 3.5 miles apart.
RACE CATEGORIES:
RACE HIGHLIGHTS:
ADDITIONAL INFO:
RAIN or SHINE. In the event of inclement weather that would threaten the safety of the racers, the event or courses may be altered or the event may be delayed or canceled.
RACE DAY SCHEDULE
CLASSIC SWAG
AWARDS
PACKET PICK-UP
PARKING
OVERNIGHT CAMPING
REFUNDS/TRANSFERS
COURSE MAPS - Viewable HERE
Oct 10, 2026
Distance — 100K
Type — Running
07:00
$155.00
Oct 10, 2026
Distance — 100K
Type — Running
07:00
$0.00
Oct 10, 2026
Distance — 50K
Type — Running
07:15
$115.00
Oct 10, 2026
Distance — 25K
Type — Running
07:30
$85.00
Oct 10, 2026
Distance — 10K
Type — Running
08:30
$65.00
Oct 10, 2026
Distance — 5K
Type — Running
09:00
$55.00
Oct 10, 2026
Distance — 1K
Type — Running
11:00
$30.00
Oct 10, 2026
Distance — 100K
Type — Running
39 days remaining
$155.00
Oct 10, 2026
Distance — 10K
Type — Running
39 days remaining
$65.00
Oct 10, 2026
Distance — 25K
Type — Running
39 days remaining
$85.00
Oct 10, 2026
Distance — 50K
Type — Running
39 days remaining
$115.00
Oct 10, 2026
Distance — 5K
Type — Running
39 days remaining
$55.00
Oct 10, 2026
Distance — 100K
Type — Running
39 days remaining
$0.00
Oct 10, 2026
Distance — 1K
Type — Running
39 days remaining
$25.00
These values represent the 3-year monthly averages for October in Glen Rose.
Learn more about the host city, Glen Rose.
Glen Rose is in the Prairies and Lakes region of Texas. It is the county seat of Somervell County.
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