RMRR Fall Marathon Training Series - Thornton

SEP
27
2026
Supported, timed training runs in Thornton offering 10 mile and 20 mile distances with aid stations and parking on Sunday September 27.
Sun 27 Sep 2026
20 miles 10 miles

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RMRR Fall Marathon Training Series - Thornton

This event is the third race in the 2026 Fall Marathon Training Series and is intended for people training for spring marathons. The runs are organized as supported training races with aid stations. Performance on the course is timed and scored.

Two distances are offered to match different marathon training needs:

  • 10 mile
  • 20 mile

The venue is Riverwalk Ballfields in Thornton, located at the intersection of 100th Avenue and Riverdale Road. The ballfields provide plenty of parking for participants.

Participation rules state that pets are not allowed on the course and running strollers or baby joggers are not permitted on the route. Organizers specify that participants arriving with a dog or stroller will not be permitted to join the run.

The description of the event identifies it as a competitive training run with on course support and official timing. The primary focus is to provide a structured training opportunity for those preparing for half marathon or full marathon distances. Visit the organization's website for the most recent information.

20 mi
20 Mile
10 mi
10 Mile
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