Oso Group

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SAN BERNADINO, CA, USA

Quick Facts

6,400 ft

Price

$480/night

Booking

Reservable

Sites

1 campsites

Season

Open April 18 to Sep...

Cell

Unknown

Pets

Check Policy

RV Friendly

Opens California Land Management site

Official Website
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Real-Time Availability

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January 2026

Real-Time Availability

Select a month, then check for open campsites

January 2026
Oso Group
$480.00 - $480.00 / night
Campsite Fees
Peak season rates for group reservations are $480 per night, with an additional $10 for holiday bookings.
Standard Site Fee$0.00
Hookup Site Fee$0.00
Premium Site Fee$0.00
Hike and Bike Site Fee$0.00
Group Site Fee$480.00
Food Storage Locker Fee$0.00

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Provider
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Campground Map

SAN BERNADINO, CA, USA

Oso Group

SAN BERNADINO, CA, USA

Driving directionsTake I-10 East to Redlands. Take the University Street exit, EXIT 80. Turn left (northbound) on University Street. Turn right onto E. Lugonia Avenue/SR-38. Continue on State Highway 38 for approximately 22 miles to the campground entrance.
The campground is accessible by gravel and dirt roads; there are no utility hookups at the site.

Best Time to Camp at Oso Group

Experience the dramatic seasonal transformations of mountain life at Oso, where crisp, dry winters invite cozy campfire gatherings under star-filled skies. As summer arrives, the campground basks in perfectly moderate temperatures that make outdoor adventures irresistible. Spring and fall bring their own magic, with occasional rain showers nurturing the forest and rare dustings of snow that transform the landscape into a winter wonderland during transitional periods.

Best
Summer(Jun-Aug)
4.0 / 5

Peak season Apr–Sep with boating, hiking, biking and stocked fishing; busiest and most active time.

Fall(Sep-Nov)
3.0 / 5

Open into early fall (through Sep 20) with good scenery, but late-fall access is closed.

Spring(Mar-May)
3.0 / 5

Opens Apr 18; late spring offers good hiking and cooler mountain conditions but limited early-spring access.

Winter(Dec-Feb)
Not recommended

Campground closed out of season; no winter bookings available.

Planning Tips
  • Peak Season: April 18, 2025 - September 20, 2025 and April 17, 2026 - September 19, 2026.. Book 2-3 months ahead.
  • Operating Season: Open April 18 to September 20 (peak season); no bookings available out of season.

About Oso Group

Nestled in the heart of the San Bernardino Mountains, Oso Group Campground offers an intimate retreat exclusively designed for groups seeking adventure in the pristine Barton Flats wilderness. This secluded haven serves as your gateway to miles of winding trails perfect for hiking, mountain biking, and horseback riding through towering pines. When you're ready for aquatic adventures, the crystal-clear waters of Jenks Lake and the meandering Santa Ana River await just minutes away, offering exceptional fishing and boating experiences amidst spectacular mountain scenery.
Oso Group Campground is exclusively a group camping site that accommodates tent and RV campers. It caters to large gatherings and offers no additional types of accommodations beyond the group site.
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Reserving a campsite

Check-in
11:00 AM
Check-out
12:00 PM
Stay Limit
You may stay up to 14 nights total within a rolling 30-day period.

Amenities available

Potable water
Flush toilets
Fire rings
Picnic tables
Group Sites

Activities you can enjoy

Oso Group Campground offers a range of recreational activities, including access to hiking, fishing, biking, horseback riding, and non-motorized boating. Scenic trails traverse nearby areas like the Santa Ana River Trail, Rio Monte Trail, and Jenks Lake, providing options for all levels of outdoor enthusiasts. Opportunities for wildlife viewing and interpretive programs at nearby attractions are also highlighted.
HikingHiking is a prominent activity at Oso Group Campground. Popular trails include the Santa Ana River Trail, which promises spectacular views upon completion, and the Rio Monte Trail leading to the Rio Monte Panorama overlooking the Santa Ana River Valley gorge.
FishingFishing is available at Jenks Lake and the Santa Ana River. Jenks Lake is stocked with rainbow trout, largemouth bass, bluegill, sunfish, and catfish. Fishing at the Santa Ana River offers additional variety for anglers.
BikingBiking trails are accessible from the campground, including sections of the Santa Ana River Trail. Terrain and difficulty levels are not detailed.
BoatingNon-motorized boating options are available at Jenks Lake, where rowboats, canoes, and kayaks are permitted. Docking services are not mentioned.
Wildlife viewingThe region surrounding Oso Group Campground hosts a variety of wildlife and bird species, offering campers opportunities for observation and photography.
Cultural and Educational ProgramsThe nearby Grayback Amphitheater hosts evening educational programs during summer weekends, focusing on the area's historical and natural features.
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Policies & Safety

Hazards & AlertsBears frequent the area, and visitors must handle food and garbage cautiously. Gravel roads may be challenging for certain vehicles.

Weather at Oso Group

Reviews

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Limited Reviews
Limited Reviews
Oso Group has limited reviews, placing it in the bottom % of campgrounds based on reviews
No user reviews are available for Oso Group Campground.
Review Summaries

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Seasonal Insights

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Camper Quotes

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Accessibility Features

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Pet-Friendly Features

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Last updated January 13, 2026
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