Between Omaha and Lincoln near Ashland, the White Sands Raceway has a motocross track.
To reach White Sands Raceway from US80, use Exit #432. Head west on SR6. Turn right on SR92A to Road A. Turn north on Road 4 and the track is on the right.
Overall, White Sands Raceway is the 5th most popular dirt bike trail of all 9 dirt biking rides in Nebraska.