I rode this trail yesterday from Arapahoe to a couple miles past Stroh road and back to the car. Would have went farther but the weather started looking bad and I didn't want to get caught in it. Went I went 470 I could actually touch the underneath from my bike it's that short. Was worried about my head for a minutes or two.
I have also ridden what I call my loop. Cherry Creek Park to Chatfield to REI and back to Chreey Creek. It's about 68 miles round trip. I hate the C470 part.