Arroyo/Mountain is an 18-hole, par-72 combination of two of Palmilla Golf Club's three Jack Nicklaus-designed nines. From the black tees it measures 6,939 yards and carries a 73.7 course rating and 138 slope. Gold plays 6,572 yards, Blue 6,130, White 5,673 and Red 4,858.
The Arroyo nine alone extends to 3,337 yards, while the Mountain nine measures 3,602 yards. Both nines cross desert terrain shaped by arroyos, elevation changes and native cardon cacti. Since 1 January 2025, both Arroyo and Mountain have been restricted to Palmilla Golf Club members and guests of One&Only Palmilla, making the Arroyo/Mountain combination a restricted-access layout rather than a general public tee-time option.
The course is an 18-hole resort golf course. It plays to par 72, 6,345m (6,939 yards), course rating 73.7 and slope rating 138. The course was designed by Jack Nicklaus. It is open to resort guests. On-site facilities include Clubhouse, Golf Shop, Practice Facilities, Club Rental, Comfort Stations.
Palmilla was developed as a 27-hole Jack Nicklaus facility, with its three nines combined into different 18-hole courses.
The Arroyo and Mountain nines use desert washes, elevation changes and native vegetation as defining features rather than functioning as two interchangeable loops.
From 1 January 2025, both Arroyo and Mountain became exclusive to club members and One&Only Palmilla guests.
The Arroyo/Mountain combination remains a rated par-72 course but is now restricted-access.
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