A long desert race in Az would be really great. BITD Parker 425 is the as race to run. However, land management groups make it difficult for promoters like AZOP and SADR to secure reasonably priced permits. If you are ok with short loops, tight courses and a Grand Prix style finish run with AZOP. If you are cool with traveling to Mexico for 125+ mile loop and 250 to 300 miles races, run with SADR. The choice is yours.