New Race Track East Of Denver
 

My friend just raced his RC51 at the new High Plains Raceway, 60 miles east of Denver: http://www.highplainsraceway.com/track.html. 460 acres of rolling terrain features a track with 15 turns, 2.5 miles long, and significant elevation changes.

Bought time they did something useful with all that empty moonscape east of Denver. People might fall asleep driving there, though.