RNK Marathon Training Run

SEP
12
2026
A free supported training run in Castle Rock with 16-mile and 10-mile route options, community support, sponsors, and on-site vendors.
Sat 12 Sep 2026
16 miles 10 miles

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About the race

RNK Marathon Training Run is a free supported training run hosted by RNK Running & Walking at RNK Running and Walking Castle Rock, 440 Fourth Street, Castle Rock, CO 80104. The event is presented as a store-to-store training run and is intended to help participants log long-run miles in preparation for a marathon or half marathon that fall. It is the organizer's second store-to-store run.

The run offers two route options to cover longer training distances:

  • 16 miles
  • 10 miles

The event is in person and open to all ages. It includes community support for runners and features on-site partners and sponsors. Listed sponsors include Nike, Hoka, Tailwind, and Neversecond. Additional on-site contributors include Elevate Therapy Massage and Smoothie King. Free parking is available at the venue.

The description notes the run is supported, intended to test marathon readiness and to encourage fellowship among local runners while using local trails. Several operational details appear in organizer materials, such as questions about parking, water on course, shuttles, timing, finish location, and drop bag service, but specific answers to those items are not provided here. Visit the organization's website for the most recent information.

16 mi
16 Mile Route
10 mi
10 Mile Route

Events nearby

A 24-hour loop endurance race at Palmer Lake, CO on a 0.82 mile course at 7,240 feet with awards and buckle guarantees for early 100-mile finishers.
The 4th annual Greenland Open Space Pack Burro Race in Larkspur, Colorado offers 8 Mile and 3 Mile pack burro divisions. Teams must register a burro partner, follow animal welfare rules, and the field is limited to 75 participants.
Experience the scenic HRCA Backcountry Wilderness Area with trail races for the whole family. Enjoy rolling hills and open views followed by a pancake breakfast and finisher medals for all participants in Littleton.
Castle Rock trail festival with a family adventure run and races from 5K to 50K on Philip S. Miller Park and Ridgeline Open Space.
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