Riding the River Road, ~70 mi on FM-170, from Study Butte to Presidio, TX

The Rio Grande River shown above is the natural border between U.S. and Mexico.  The roller coaster road FM-170 follows the river from Study Butte to Presidio, TX We planned to get an early start for our planned ride on FM-170 from Study Butte to Presidio, TX.  We knew we had a ride of 100 … Continue reading Riding the River Road, ~70 mi on FM-170, from Study Butte to Presidio, TX