The Subaru Elephant Rock Cycling Festival is the unofficial start to the Colorado cycling season. You will not want to miss the excitement and camaraderie of the 28th annual pilgrimage to Castle Rock for the Rocky Mountain region’s premier cycling festival, a Rocky Mountain tradition.

Included with your Registration

In addition to a great experience riding some of Colorado’s most scenic miles, each participant will receive:

• refreshments and support throughout each of the rides
• a ticket to the post-ride Italian picnic
• a specially designed 2015 Subaru Elephant Rock T-shirt
• virtual goodies from our many sponsors
• a chance to win dozens of valuable prizes
• custom bike number for the ride and wristband for lunch expo

Before you Register, please consider:

  • You MUST be 15 years of age to ride in the 100 and 62 mile courses
  • To be considered a child you must be 14 and under the day of the event, for 40, and 27 Gravel courses.
  • For the 8 mile family ride, all ages are welcome!
  • Tandems are allowed on all courses, but each Rider on the tandem bicycle must register separately.
  • All riders will receive a bike number and wristbands. You must wear your event wristband at all times. Your wristband will give you access to the courses and refreshments at the aid stations as well as act as your ticket to the Italian lunch and prize drawings at the post party.
  • Your bike number should be attached to the top tube of your bike. Colorado State Patrol has the authority to remove anyone without a bike number off the course you could face potential criminal charges.
  • You must wear your helmet at all times while riding. Protect your rock!

Mail in Registration

Postmarked by May 15, 2015 
(must be in our hands by May 18th)

Packet Pickup: 
Before May 15 - choose any participating bike shop to pick up your packets between May 26 and June 3.

Bike Shops:
View All Participating Shops 

Online Registration

Wednesday, June 3 @ 11:59 p.m. MST

Packet Pickup Deadlines: 
May 17 - choose any participating bike shop to pick up your packets between May 26 and June 3
After May 17 – Douglas County Fairgrounds on Saturday, June 6 or Sunday June 7.

Bike Shops:
View All Participating Shops 

40 & 27-Mile Adult


UNTIL - JUNE 3 2015
Ride Weekend


Register Online

40 & 27-Mile Child


UNTIL - JUNE 3, 2015
Ride Weekend


Register Online

8-Mile Family Ride


UNTIL - JUNE 3, 2015
Ride Weekend
Register Online

Kids Race


Races are during Expo at 1pm See you there! 

Ride day Registration

Ride-day registration will be held at the Events Center at The Douglas County Fairgrounds at the following times:

Saturday June 6 from 4-8pm
Sunday June 7 from 5:30am to 9am

Course Caps

The Subaru Elephant Rock will enforce a registration cap on each individual course rather than a overall participant cap. Registrations will not be accepted once the caps are met. Please register early!

Manage Registration

Subaru Elephant Rock Participants are able to manage their registration details until May 8, 2015.  Riders can change T-shirt size, Course changes, and Packet Pick Up locations and other custom questions.  Participants can just log in and do all your self with your confirmation link.  Participants are NOT allowed to change their name, address or any way transfer a registration to somebody else.

Course Change

Participants can change their course this year.  Participants will be charged an additional $10.00 to change the class starting on Wednesday April 08, 2015 and ending Friday May 08, 2015. This is in addition to the difference in class prices. They can change class prior to April 08, 2015 for no additional fee beyond the regular price difference.


In true cycling tradition, the Subaru Elephant Rock will take place regardless of weather; therefore NO refunds will be provided.