Please click the Sign-up link below to register for the 2013 Nitro National Pro Hillclimb in Columbus, Montana. The deadline for entries will be May, 27th at 11:00 PM, and there will be no late entries accepted. Please keep in mind that you must be an NAHA member to ride. To sign-up for the NAHA please see the 'NAHA' page. For any questions about registration please feel free to contact us at anytime.