Full Valley + Shalona.
34m, 1,600ft.
The most ridden road ride in Durango. Mostly flat besides Old Shalona hill, which can be skipped if desired. Popular training ride for intervals.

Half Valley.
17.4m / 564ft.
The shortest route here. This is the Full Valley route, just cut short at the halfway point.

Nighthorse + 125 + 160
24mi, 2,100ft
A few nice climbs before a long fast descent back to town on a wide shoulder next to 160. You can also ride this as an out and back on the southern half for the quieter roads only.