Rmrr Fall Marathon Training Series #3
About this race
RMRRs Marathon Training Series (MTS) races are low cost, friendly, supported, accurately measured, well marked, and timed. Each MTS has 10mi & 20mi, or 20k & 30k options. All you need to do is focus on your running!
The MTS fits well into training schedules for Colorado Springs, Boulderthon, Long View, Chicago, Monumental (Indy), New York, and other fall full and half marathons.
MTS#3 offers 10mi & 20mi options (we can accommodate almost any distance in between).
Please note that for everyone's safety, dogs or running strollers are not permitted on our courses. Thanks for understanding.
The races begin at 7 am at Riverdale Ballfields at 9830 Riverdale Road in Thornton Colorado.
#1: Aug 25 - 10mi & 20mi
#2: Sep 8 - 20k & 30k
#3: Sep 22 - 10mi & 20mi
RMRR Members receive a $5 discount off individual races and $15 off the 3-race bundles. Discount taken when you check out. Your membership must be current.
Join fellow runners on September 21, 2025 for the Rmrr Fall Marathon Training Series #3. It's a fantastic 16.1K, 32.2K featuring a flat and fast course in Thornton.
Pick your distance
Running
RMRR Fall Marathon Training Series #3 - 10 Mile
Out-n-back once.
RMRR Fall Marathon Training Series #3 - 20 Mile
Out-n-back twice.
About Thornton
Rmrr Fall Marathon Training Series #3 takes place in Thornton, Colorado, United States. The local timezone is America/Denver.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
Nearby Events
Rmrr Fall Marathon Training Series
Rmrr Fall Marathon Training Series #2
Rmrr Fall Marathon Training Series #3
Rmrr Fall Marathon Training Series
Rmrr Fall Marathon Training Series #2