West of I-15 (Los Angeles, Orange County, etc): Take the 210, 10 or 60 Freeways East then I-15 South, OR 91 East to I-15 North. From the I-15, off at 6th Street/Norco Drive. Go east to rodeo gates.
East of I-15 (Moreno Valley, Palm Springs, etc): Take the 10 or 60 Freeways West, then I-15 South, OR, 91 West to I-15 North. From the I-15, off at 6th Street/Norco Drive. Go east to rodeo gates.
North (Yucca Valley, Barstow, etc): I-15 South (past the 60). Off at 6th Street. East to rodeo gates.
South (Temecula, San Diego, etc): I-15 North (past the 91). Off at 6th Street. East to rodeo gates.