San Francisco International Airport (SFO), a 3 hour 22 min drive, and Sacramento International Airport (SMF), a 3 hour 10 min drive.
From the Greater Bay Area: Follow I-580 East to the Tracy triangle, then take I-205 East through Tracy. Exit onto I-5 North, and then quickly take exit 461 onto CA-120 East to Manteca. Merge onto CA-99 North (also still CA-120 East), then quickly exit for Yosemite Avenue (CA-120 East). Turn right onto Yosemite Avenue (CA-120 East) and follow to Oakdale. In Oakdale, turn left onto CA-108/120 East. Follow CA-108 to Pinecrest, then follow the signs to Dodge Ridge.
From the Fresno Area: Take 99 north toward Modesto. You can take 108 east out of Modesto or go a bit further up 99 to the Salida exit. Head east and you'll intersect 108 east of Modesto.
From the Sacramento Area: Head south on 99 toward Stockton. Follow the signs off 99 to Sonora; you'll hook up with 108 east of Oakdale.
From the Central Valley: Take your favorite route to the Modesto/Oakdale area and pick up 108.
Dodge Ridge is located 30 miles east of Sonora, near Pinecrest, just off of Highway 108. Turn right off of 108 at the well signed "Y" to Pinecrest Lake Road - if you get to Strawberry you've gone a bit too far. About a 1/3 mile down Pinecrest Lake Road take the first right onto Dodge Ridge Road.