Rancho Duarte Golf Course
1000 Las Lomas Road

Duarte, CA


Green Fees


 9 Holes


 Twilight (2:00 pm)









Seniors &   Juniors 

 12.00 & 10.00


 9.00 &


*Weekends & Holidays








Seniors & Juniors



11.00  &


*Twilight now starts at 2PM on the weekend. Rates change to $10 for everyone.

Range Balls   


 # of Balls*









*actual number of balls may vary slightly


 Pull Carts  Driving Carts
 1  3.00  10.00
 6.00  15.00

Also, Gift Certificates are available in the Pro Shop upon request. They are an excellent gift for any golfer.


Our professional teaching staff is suited and well-prepared to cater to your golfing needs. Whether you're a beginner playing golf for the first time or a more experienced player, our teaching staff will help you improve your overall game utilizing our practice facilities which include a driving range, putting green and short game area.

We have three professionals on hand who are each more than capable of helping you improve. Lessons usually last between 45 minutes and an hour. Our professionals are more than happy to accommodate for group lessons involving family or friends.

Teaching Professionals

Greg Castleman

Greg is a developmental teacher. He teaches you the complete game, not just the golf swing. To learn to play golf takes time and practice. There are no secrets - just basic fundamentals and they must be learned in a sensible way. Greg is not a fad or method instructor. He, to put it simply, is a fixer. He will quickly diagnose the root causes of your swing issues and will design a program tailored to your specific needs.He has studied with legendary teachers, including Mac O'Grady.

Greg has decades of teaching experience and enjoys teaching golfers at all levels. Past and current students include professionals, top junior golfers, and LPGA winners. He currently teaches the #1 ranked female junior golfer in America. He has students that come from as far away as China.

Alex Quintana

Alex also serves as General Manager at Rancho Duarte. He, along with his talented and handpicked staff, specialize in group lessons. Although, individual lessons are available.

Lee Deitrick

I have been fortunate to have studied the swing under the guidance of such instructors as Jim Flick for 20 years, Peter Kostis, Paul Bertholy, Mike Hebron, Tom Tomasello, Jim Suttie, Rick McCord, Dick Farley, Joe Daniels, Chuck Evans, Lynn Blake, and Peter Croker.  

I am an Authorized Instructor for The Golfing Machine and have earned a G.S.E.M. degree.   I am a Medicus Golf Institute Master Instructor.  I am also a C.H.E.K. Certified Golf Biomechanic who is able to improve performance in golfers by addressing golf-specific conditioning needs, thus enabling the golfer to reach their golf potential and increase their enjoyment of the game.

My teaching credentials include 30+ years of teaching experience: Instructor at the Professional Golfers Career College in Temecula, CA (2007 to present); Golf Instructor at the Mid Hill Practice Center, Corona, CA (2008 to present); Golf Instructor at Rancho Duarte Golf Course, Duarte, CA (2008 to present); Lead Instructor for the Minnesota Golf Schools (1992-present); Golf Instructor for Sam's Custom Golf Center, Rialto, CA (1989-present); Golf Instructor at Ayala Golf Center, Chino, CA (1997-2008); Teaching Professional, El Rancho Verde Country Club, Rialto, CA (1980-1989, 2000-2006); follow-up instructor for Golf Digest Schools under Jim Flick (1982-1989); National Golf Foundation (NGF) instructor for professionals, teachers, and coaches (1985-1992); Director of quality Assurance for Peter Croker's "Path to Better Golf" program (1996-2004); Director of Instruction at Golf Excellence International, a High Tech Instruction and Training facility, in Santa Fe Springs, CA (2004-2006); past member of the Board of Regents of the NGF's Association of Golf Educators, where I was Chairman of the Drills and Teaching Aids Committee.

I use computer digital video in my instruction exclusively for better communication with my students.  I have used a 2 camera, split-screen video set up since 1988. I have used JCVideo Systems in my instruction since 1998.