This is a fine ride, divided into three loops. Each loop starts/ends at the park.
The first loop is a fairly flat 50 mile loop. The second is a more hilly 25 mile loop and the third is a flatter 25 mile loop. It's generally suggested that the loops are done in order to make sure the rest stops are manned.
The last two years, it has been chilly in the morning (mid to low 60's), warming into perfect riding weather by mid-morning.
I'll probably use the weather as a guide and go if it will be nice. I'm not sure if I'll do 50, 75 or 100 miles at this point.