From San Diego:

Take Scripps Poway Pkwy from Interstate 15 east for 4 miles
Turn left on hwy 67 for 10 miles (the road changes
names to hwy 78 in Ramona) continue on for 19 miles
Turn left on hwy 79 for 12 miles
Turn right on hwy S2 (AKA San Felipe Road) for 16 miles
Turn left on hwy 78 for 7 miles
Turn left on S3 (AKA Yaqui Pass Road) for 6 miles
Turn right at Rams Hill Road and follow it to the end

 

From Palm Springs:

Take Interstate 10 east for 18 miles
Turn right on hwy 86 for 47 miles
Turn right on hwy 78 for 23 miles
Turn left on hwy 79 for 12 miles
Turn right at Borrego Springs Rd for 6 miles
Turn left at S3 ( AKA Yaqui Pass Rd) for 1 mile
Turn left at Rams Hill Rd
Arrive at Montesoro Clubhouse

 
1881 Rams Hill Rd. Borrego Springs, CA 92004    (760) 767-5000