To participate in Sunrise to Sunset, please register in one of the following categories:

Solo (Male / Female)
Solo Single Speed (Male / Female)

2 Person Team (Coed / Male / Female)
3 Person Team (Coed / Male / Female)

4 Person Team (Geezer)
4 Person Team (Adult)
4 Person Team (Junior / Adult)
4 Person Team (Junior Only)

5 Person Team (Geezer)
5 Person Team (Adult)
5 Person Team (Junior / Adult)
5 Person Team (Junior Only) 

*Awards will be given to the top three positions in all of the aforementioned categories. 



You may register as an INDIVIDUAL or CREATE A TEAM.  If you are registering as a team, first appoint a Team Captain.  The Team Captain will need to register first and when doing so, select “Create a Team”.  He or she will then input the team name and complete their own registration. The Team Captain will need to inform their desired team members of the team name. When teammates go online to join, they will select “Join a Team” and click the appropriate name from the menu.  The team name may also be found by entering the Team Captain’s last name in the search bar. Once the team name is found and selected, members will be prompted to complete their own registration

For both the 4 and 5 person teams, within their respective categories and regardless of make up (male, female or coed), you will be racing against each other for the top three spots. 


This category is gaining more popularity and what better way to show up the youth than by beating them one lap at a time.  Even though you are not in their category, it’s fun for bragging rights.  If you don’t meet the requirements, you will compete in the Adult 4/5 person category.


• Geezer Teams must have a combined age of 200 years for a 4 person team and 250 years for 5 person team

• The youngest team member must be at least 45 years old


This category consists of male, female, and coed teams whose combined age is less than 200 years for four person teams and less than 250 years for five person teams.


• To be classified as an adult you must be 19 years of age or older


More and more we get asked, can I race with my kids and their friends?  To accommodate this request, we’ve add a new Adult / Junior category.   Parents or adults over 24 years of age may register to be a part of a Junior team and pay at the Junior rate. 


• Adult / Junior Teams must have a majority of juniors (1 Adult, 3 Juniors or 2 Adults, 3 Juniors)

• Adults must be at least 24 years old

• Juniors must be 14 to 18 years old


If you are part of a high school team that is great, if you are not, grab your buddies and come out and have fun with us on the trails.


• Junior teams MUST have an adult or coach on the premise at all times

• Juniors must be 14 to 18 years old


Participants may pick up their bike bib at Philip S. Miller Park in Castle Rock on the following dates / times:

Friday, June 1: 5:00 p.m. – 9:00 p.m. “Packet Pick-Up Party”
Saturday, June 2: 5:30 a.m. – 6:30 a.m. “Race Day”

Philip S. Miller Park
1375 W. Plum Creek Parkway
Castle Rock, CO 80109

Walk-on registrations will also be accepted during these specified hours.


In true cycling tradition, the Subaru ERock Sunrise to Sunset will take place regardless of weather; therefore NO refunds will be provided.

What is Included?

  • “NEW” pack & go custom cooler for race day snacks and beverages
  • Great refreshments and entertainment
  • Post race BBQ and party; complete with food, beer and live music
  • Tons of great prize drawings
  • Chip timing with live tracking

Team Changes

If you have a change to your team (adding a member, transferring a member or moving into a different category) please fill out this Change Form and bring it to the event. We will make all changes before the race on June 2.  Of course if you have any questions, please don’t hesitate to email us.

Download Form Here