Northeast of Las Vegas near Mesquite, the Mesquite Moto X Park has a motocross track.
To reach Mesquite Moto X Park from Las Vegas on US15, use Exit #122. Turn right off the exit on Pioneer Blvd. Take a left at the first light on Hillside Drive. Stay on hillside until you reach Palms Golf Course Road. Take a right onto Peppermill Palms Blvd and follow the road through the golf course.
Overall, Mesquite Motocross Park is the 20th most popular dirt bike trail of all 29 dirt biking rides in Nevada.