these are some that we look forward to

palo verde nuclear century in west phoenix 0ct 28 - 50 or 100 miles (sportsfun.com/gaba)
tour de scottsdale Sunday, October 4 - 70 hilly miles (active.com)
as el tour de tucson gets closer, they will have weekly training rides that are fun to go to (bikegaba.org)
then there's the silverbell and tumacacori centuries to really get you prepared for el tour (perimeterbicycling.com)