Castell Grind Online Registration

Our terms of use and privacy policy have changed.

About Us
Event Calendars
- Mountain Bike
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Road Race
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Recreational
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Gravel
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Cyclocross
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Cycling Camp
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Bike Tour
  - Near Me
  - New England
  - Northeast
  - Mid Atlantic
  - Southeast
  - Midwest
  - Rocky Mountain
  - South Central
  - Texas
  - Northwest
  - Southwest
  - All Regions
- Other Events
  - Special Event
  - Time Trial
  - Gran Fondo
  - Track
  - Club Membership
  - Hill Climb
  - Multisport
  - BMX
  - Virtual
Results
Support
Participant Sign In
Event Director Sign In
Create Account
My Profile
Logout

Sign In
- Participant Sign In
- Event Director Sign In
- Create Account
- Sign In
  
  *
  
  *
  
  Remember Me
  
  >> Forgot username or password?
  >> Need to create an account?
  
  By selecting 'Sign In', you agree to Outside's Terms of Use and Privacy Policy.
  Sign In Signing In
  
  *Choose login type
  
  close
  
  An Outside account already exists with that email address.
  
  Please enter the password for that account and verify your email to merge your accounts under Outside.
  
  BikeReg is now a part of Outside!
  
  BikeReg is now a part of Outside! You have already set up your Outside Account. info
  BikeReg has joined the Outside family!
  Your Outside account gives you access to personalized content from 30+ active brands.
  
  You have already converted your BikeReg account to an Outside account.
  Use your email address and Outside password to sign into your account.
  
  We found an Outside account registered to this email address:
  
  Username
  
  Password
  Username/Email is required. A valid email address is required. Password is required.
  
  By selecting 'Sign In', you agree to Outside's Terms of Use and Privacy Policy.
  Sign In Signing In
  Forgot password?
  
  Forgot username or password?
  
  Already have an Outside account? Sign in to Outside
  
  or sign in and convert your BikeReg account Sign In To BikeReg Account
  
  or Create an Account You'll get content from Outside's more than 30 active brands with one account!
  
  Register as a Guest
  
  You're already signed in. Not You?
  
  BikeReg is now a part of Outside!
  
  Your BikeReg account(s) have been merged with this Outside account - use it to sign in from now on. Access your BikeReg information from this User menu by clicking on "My BikeReg".
  
  Sign in with this account from now on.
  
  Verify your email to access My BikeReg
  
  Never enter your registration credentials again. Verify your email to save your previous registration credentials to your profile, and never enter them to register again!
  
  Verify Email Sending Email
  Skip For Now
  
  Register as guest
  
  Email Address is required.Email Address
  
  Continue Continue
  
  Accounts Found
  
  We found other accounts registered to that email.
  
  Outside Account Found
  
  We found a BikeReg account associated with this email address:
  
  We found BikeReg accounts associated with this email address:
  
  You haven't set up your Outside account yet. Let's get that fixed!
  
  It looks like you’ve registered for events with us before, but haven’t created an account.
  
  It looks like you've registered for events with us before.
  
  BikeReg is now part of Outside! We found an Outside account registered to this email address:
  
  BikeReg is now part of Outside! We found an Outside+ account registered to this email address:
  
  Let's merge your accounts.
  
  Let's convert your account to Outside.
  
  Verify your email to merge all your athleteReg information under your new Outside account: Simply verify your email and create a new password to merge your accounts under Outside: Simply verify your email and password to merge your accounts under Outside. Simply verify your email and password to merge your accounts under Outside+. Simply verify your password to merge your accounts under Outside. Simply verify your password to merge your accounts under Outside+. Simply verify your email and create a password to convert this account to Outside: Simply verify your email address and create a password to set up your new Outside account. Verify your email to merge all your athleteReg information under your new Outside account: Verify your email to merge all your athleteReg information under your Outside account.
  
  Save time by creating a free account!
  
  Simply verify your email, create a password, and we’ll pull your previous registration history into your profile.
  
  Verify your email address to pull in your previous registration history and save some time.
  
  Email Address: [edit]
  
  Verify Email & Merge Accounts Sending Email
  
  Skip this step
  
  Already have an Outside account? Sign in with Outside
  
  or sign in to your BikeReg account Sign In With BikeReg Account
  
  or sign in to your BikeReg account Login with BikeReg instead
  
  Register as a Guest
  
  What happens when I convert my account to an Outside account? What happens when I merge my accounts under an Outside account?
  
  Some things won't change.
  
  Your content, features, profile, and event information all stay the same.
  
  Your account gets leveled up!
  
  You’ll be able to log in across all athleteReg sites and get customized content from Outside’s more than 30 brands with one account!
  
  Verify Email & Merge Accounts Sending Email
  
  Check your email
  
  Password Reset
  
  A verification link was just emailed to:
  
  A password reset link was just emailed to:
  
  [edit]
  
  Please click the link in your email to continue. Click the link in your email to complete registration.
  
  Resend the link Cancel Skip for now Skip for now Skip this step
  
  Bypass Verification
  
  Last Step!
  
  Password Reset
  
  Create An Outside Account
  Use your new account to register for your next event with ease, and to access content from Outside’s more than 30 active brands!
  
  Create a password for your Outside account. Next time, you’ll login with your Outside account and new password.
  
  Enter a new password for your Outside account:
  
  When your information is correct, enter a password for your new Outside account:
  
  Enter the password for your Outside account:
  
  Create Password
  
  Re-enter Password
  Please create a password. Please re-enter your password. Passwords are different.
  
  Create Password & Finish Creating Outside Account Sign In & Finish Signing In to Outside Account
  By clicking "", you agree to the Terms of Use and Privacy Policy.
  
  Forgot password?
  
  Cancel without creating account
  
  Cancel without merging accounts
  
  Update Email Address
  
  Enter your email address below and we'll send you a link to reset your password.
  
  We will send a link to the email address below to reset your password.
  
  A valid email address is required.Email address is required.Email address
  
  Save Saving
  or Sign In To BikeReg Account Instead
  
  Back to Login
  
  close
  
  Account Created!
  
  We successfully pulled your previous registration history into your profile!
  
  You can review them by clicking "My BikeReg" in the BikeReg navigation.
  
  Account Created!
  
  From now on, you'll sign in using your Outside account.
  
  Account Converted!
  
  From now on, you'll sign in using your Outside account.
  
  Accounts Merged!
  
  From now on, you'll sign in using your Outside account.
My BikeReg
- My AthleteReg
- Logout

This is a past event. If you're looking for this year's event, you probably want to search the event calendar.

Who's Registered

Total Event Registrations: 608

We couldn't find any matches for that search.

Is the name spelled correctly?
Has the participant registered yet?
Is this the correct event?

Clear Search | Expand All | Collapse All

318 entries + Full Grind 100K

8 entries + Full Grind 100K Waitlist

115 entries + 3/4 Grind 75K

8 entries + 3/4 Grind 75K Waitlist

120 entries + Half Grind 50K

8 entries + Half Grind 50K Waitlist

31 entries + 2023 Deferment

Register with