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The Mammoth 100K - 50K - 25K - 10K - 5K and Mighty Mammoth 1K Fun Run

Sat October 11 - Sun October 12, 2025 Glen Rose, TX 76043 US Directions

100K Ultra Trail Run

Event Dates:
Saturday October 11, 2025 - Sunday October 12, 2025
Start Time:
7:00am CDT
End Time:
9:00am CDT
Price:
$155.00 Race Fee + $10.30 SignUp Fee
Registration:
Price increases to $165.00 after July 17, 2025 at 11:59pm CDT

50K Trail Tun

Event Date:
Saturday October 11, 2025
Start Time:
7:15am CDT
End Time:
7:15pm CDT
Price:
$115.00 Race Fee + $7.90 SignUp Fee
Registration:
Price increases to $125.00 after July 17, 2025 at 11:59pm CDT

25K Trail Run

Event Date:
Saturday October 11, 2025
Start Time:
7:30am CDT
End Time:
1:30pm CDT
Price:
$85.00 Race Fee + $6.10 SignUp Fee
Registration:
Price increases to $90.00 after July 17, 2025 at 11:59pm CDT

10K Trail Run

Event Date:
Saturday October 11, 2025
Start Time:
7:45am CDT
End Time:
10:45am CDT
Price:
$65.00 Race Fee + $4.90 SignUp Fee
Registration:
Price increases to $70.00 after July 17, 2025 at 11:59pm CDT

5K Trail Run

Event Date:
Saturday October 11, 2025
Start Time:
8:00am CDT
End Time:
11:00am CDT
Price:
$55.00 Race Fee + $4.30 SignUp Fee
Registration:
Price increases to $60.00 after July 17, 2025 at 11:59pm CDT

The Mighty Mammoth 1K Fun Run

Ages 11 and under.
Adults RUN FREE! Up to TWO with each child registration.
Non Chipped timed event.
Open to ages 11 and under.
Event Date:
Saturday October 11, 2025
Start Time:
10:00am CDT
End Time:
12:00pm CDT
Price:
$25.00 Race Fee + $2.50 SignUp Fee
Registration:
Registration ends October 11, 2025 at 11:59pm CDT

Pacers

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