VAN-COMPARATOR Guide
Joshua Tree by RV from San Diego: the California desert loop
Anza-Borrego, Palm Springs and Joshua Tree by campervan or RV from San Diego: a 5-to-7-day itinerary, recreation.gov campgrounds, summer heat and real budget.
San Diego lives facing the Pacific, but just two hours inland a completely different landscape begins: the California desert, with its giant cacti and wind-carved rock formations. The Anza-Borrego–Palm Springs–Joshua Tree loop, easily done by campervan or RV rented locally, mixes free dispersed camping with a legendary national park, without ever straying far from the coast.
The loop itinerary (5 to 7 days)
Leave San Diego heading east on I-8, then Route S2: in just under two hours the coastal hills give way to the badlands of Anza-Borrego Desert State Park, California’s largest state park. Spend two or three nights there, then head north on Route 86 along the Salton Sea to Palm Springs, a comfortable stop at the halfway point. From there, Joshua Tree National Park is 45 minutes to an hour away depending on which entrance you use: allow three to four days to explore the park before heading back to San Diego on Interstate 10 then the 15, roughly two and a half hours of direct driving.
Anza-Borrego: the desert where you sleep for free
Unlike most California state parks, Anza-Borrego allows free dispersed camping along most of its dirt roads — a rare freedom that lets you park your van for the night with no reservation and no fee, provided you stick to already-compacted ground and pack out your trash. Those who prefer a more organized setup will also find developed campgrounds around Borrego Springs. The park is best visited from October to April: some rainy winters trigger a spring "superbloom", a spectacular wildflower bloom that draws crowds for a few weeks.
Joshua Tree: no hookups, and it books out fast
The national park runs almost entirely on dry camping: none of its nine campgrounds offer water, electric or sewer hookups at the site — only Black Rock and Cottonwood have a dump station and a water fill point. Most campgrounds (Black Rock, Cottonwood, Jumbo Rocks, Indian Cove, Ryan) are booked through recreation.gov, with a booking window that opens six months out; Belle, Hidden Valley and White Tank remain first-come, first-served. Weekends from October through May fill up within minutes: aim for a Tuesday or Wednesday, or watch for last-minute cancellations, which regularly appear two to four weeks before the date. Park entry costs $30 for seven days per vehicle, or $80 for the annual America the Beautiful pass, which pays for itself by your third national park visit of the year.
Palm Springs: the comfortable stop between two deserts
Under an hour from the park, Palm Springs offers what Joshua Tree doesn’t: RV resorts with full hookups, pools and laundry, handy for topping up the leisure battery and emptying tanks before heading back into dry camping. The city is also worth the detour for its 1950s-60s "desert modernism" architecture and the Aerial Tramway, which climbs in ten minutes from the desert floor to the cool pines of the San Jacinto Wilderness — a welcome escape on the hottest days.
When to go
The October-to-May window covers the bulk of visits, with a peak in March-April around bloom season. Summer (June to September) is one to avoid in an RV: average highs top 42°C (108°F) in Palm Springs in July-August, and Joshua Tree, sitting a bit higher, is only marginally cooler at around 40°C (104°F). With no electric hookup inside the park, air conditioning won’t run through the night on battery power alone — a real risk, not just a discomfort.
Budget and which vehicle
Budget $120 to $250 a day for a converted campervan out of San Diego, $150 to $350 for a roomier Class C RV — our guide on how much an RV rental really costs walks through the full calculation, mileage and kitchen kit included. On Anza-Borrego’s dirt roads and in some of Joshua Tree’s tighter sites (Hidden Valley and Ryan don’t suit big rigs well), a compact campervan or panel van conversion threads through far more easily than a 30-foot Class A — our guide on which RV for which trip helps you decide. Pack plenty of water: there’s no reliable source between campgrounds, and dehydration is the real desert risk, well before the heat itself.
Compare before you book
Van-Comparator queries Yescapa, Goboony, Roadsurfer and Indie Campers in a single search for pickups in San Diego, with Outdoorsy and RVshare coming soon to widen the US lineup. For a first RV road trip in the United States, see our guide to renting an RV in the USA; and if the desert leaves you wanting more of the West’s great parks, our American West RV road trip is the natural next leg.
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