West of Casper, the Poison Spider ORV Area has 200 acres open to off-road motorcycle trails riding.
To reach the trailhead from Casper, head west on Zero Road for 10 miles. The trailhead is actually located 7.5 miles west of SR20/26 on Zero Road. Look for the signs.
Overall, Poison Spider ORV Area is the 7th most popular dirt bike trail of all 26 dirt biking rides in Wyoming.