North American Hillclimbers Association Pro-Series schedule:

N.A.H.A
Pro-Series schedule:
Official 2011 NAHA race schedule. (Newsletter coming soon)

April 30th and May 1st Round 1
Northwest Nitro National (Yakima WA.)

May 21-22 Round 2&3
Glen Helen (San Bernardino CA.)

June 17-18 Round 4
Nitro National (Columbus MT.)

August 10-11 Round 5
Nitro National (Sturgis SD.)

September 16-18 Round 6
The Big Nasty (Boise ID.)