Here is a list of training rides located throughout the Valley of the Sun:
Central Phoenix
Bike Barn's Ride Calendar
Trailhead Bike Cafe Ride Calendar
Ahwatukee/South Phoenix
Charlie Gerdhardt's Training Ride Schedule
Chandler/Gilbert Area
Global Bikes' Meetup Calendar
Tempe Area
Pedal Bike Shop Facebook Page
Arrowhead/Northwest Phoenix
Southwest Bicycles Cycling Club
Here is a list of training rides in Northern Arizona:
Sedona/Oak Creek Area
Absolute Bikes Ride Calendar