- American Trails: Iowa
- Trail resources for the state of Iowa, including biking trails, hiking trails, equestrian trails, links to government agencies and trail organizations in the state.
- Cedar Valley Trails
- The Cedar Falls area offers over 100+ miles of recreational trails.
- Central Iowa Trail Association
- Creates and maintains unpaved, shared-use trails in and around Des Moines.
- Iowa by Trail
- Discover Iowa's natural areas, rural landscapes and friendly communities via more than 1000 miles of beautiful multi-use trails. Search for trails by name or location.
- Iowa Coalition of Off-Road Riders
- This organization promotes, preserves, and improves mountain bike trail access in Iowa. Their web site contains information on Iowa trails including Stone Park in Sioux City, Brushy Creek in Fort Dodge, Elk Rock in Knoxville, Pilot Knob in Forest City, Rock Creek in Grinnell, and many more.
- MTBProject
- Reviews of Iowa mountain bike trails.
- MTBR Iowa Trail Reviews
- Over 50 Iowa mountain bike trails reviewed by users of MTRB.com.
- Raccoon River Valley Trail
- The Raccoon River Valley Trail is a 56-mile-long paved trail along the branches of the beautiful Raccoon River through Greene, Guthrie and Dallas Counties in east-central Iowa.
- Singletracks
- Reviews of Iowa mountain bike trails.
- TrailLink
- A directory of multi-use trails in Iowa.
- Wabash Trace Nature Trail
- The Wabash Trace Nature Trail is a converted railroad right-of-way running over 60 miles through the scenic Southwest Iowa countryside from Council Bluffs to Blanchard on the Iowa/Missouri border.