Oso Group
00 reviewSAN BERNADINO, CA, USA
Oso Group
$480.00 - $480.00 / night
Campsite Fees
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
Peak season rates for group reservations are $480 per night, with an additional $10 for holiday bookings.
About this campground
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.
Historical SignificanceImmerse yourself in the rich tapestry of mountain heritage at the nearby Grayback Amphitheater, where the San Gorgonio Wilderness Association brings local history and ecology to life through captivating summer programs. These educational experiences connect visitors to generations of mountain stories, from indigenous peoples to early settlers, while revealing the fascinating ecological relationships that make this wilderness so special.
Weather and SeasonsExperience 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.
ElevationPerched at an impressive 6,400 feet above sea level, Oso Group Campground offers a refreshing escape where crisp mountain air invigorates your senses and panoramic forest vistas stretch as far as the eye can see. This elevated sanctuary provides natural air conditioning during summer months and breathtaking views that remind you just how far you've climbed above the everyday world below.
Natural Features and SceneryStep into a living cathedral of towering pines where sunlight filters through ancient branches, creating an ever-changing mosaic of light and shadow across the forest floor. This vibrant ecosystem pulses with life as diverse wildlife roam through the understory and melodic bird songs fill the air from dawn to dusk. The dense forest canopy creates an intimate, peaceful atmosphere that feels worlds away from civilization, offering the perfect backdrop for reconnecting with nature and creating lasting memories.
Geological RegionDiscover the majestic beauty of Barton Flats, where ancient geological forces have sculpted a mountain paradise 6,400 feet high in the San Bernardino range. Here, dense pine forests blanket the landscape, their roots anchored in soil formed over millennia, creating a dramatic testament to the power of nature's patient artistry in Southern California's most beloved mountain wilderness.
Campsite details
AccessibilityNo details are provided regarding accessibility features for campers with disabilities.
Sites SizeThe group site supports up to 100 people and approximately 20 vehicles, making it suitable for large gatherings.
Sites PrivacyGroup areas are described as primarily open, with shaded tent pads. Privacy levels appear modest given the group-focused nature of the site.
Total Campsites1 campsites
Recommended CampsitesThe group campsite includes shaded tent pads, multiple tables, a campfire circle, grills, and gravel parking.
Best CampsitesThere is only one group campsite available.
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.
Guests Allowed Per Site
Up to 100 people
Groups
The group site accommodates up to 100 individuals and approximately 20 vehicles. It is designed for tent and RV campers, with no utility hookups available.
Tents
Tents are allowed
RV vehicles
RV vehicles are allowed
Primitive
Primitive are not allowed
Reservable
Reservations are allowed
Site layoutA single group site with partially shaded tent pads and open group areas. Parking and roads are gravel or dirt.
Open and Closed SeasonOpen April 18 to September 20 (peak season); no bookings available out of season.
Reservation PlatformsReservations can be made via Recreation.gov.
Walk-in AvailabilityNo walk-up availability is mentioned; reservations are required.
Cancellation PolicyCancellations for group facilities within 14 days of arrival incur a $10 fee and forfeit the first night's fee. Late cancellations beyond this window may incur additional fees.
Accomodation available
GroupGroup campsites are offered for larger parties such as families, schools, or organizations. These sites provide space and facilities to accommodate multiple people camping together.
Amenities available
Potable water
Fire rings
Picnic tables
Flush toilets
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.
Hiking
Hiking 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.Fishing
Fishing 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.Biking
Biking trails are accessible from the campground, including sections of the Santa Ana River Trail. Terrain and difficulty levels are not detailed.Boating
Non-motorized boating options are available at Jenks Lake, where rowboats, canoes, and kayaks are permitted. Docking services are not mentioned.Wildlife viewing
The region surrounding Oso Group Campground hosts a variety of wildlife and bird species, offering campers opportunities for observation and photography.Cultural and Educational Programs
The nearby Grayback Amphitheater hosts evening educational programs during summer weekends, focusing on the area's historical and natural features.Winter Activities
No winter-specific activities are described in authoritative sources.Water Sports
Non-motorized boating options such as kayaking, canoeing, and rowboating are allowed at Jenks Lake.Campground rules
- Pets are not allowed
- Campfires are permitted only in the designated campfire circle. Portable gas stoves may require a California Campfire Permit.
Hazards
General hazardsBears frequent the area, and visitors must handle food and garbage cautiously. Gravel roads may be challenging for certain vehicles.
Weather forecast
69
°F
Aug 25
Monday
Overcast
Precipitation: 0%
Strong wind, exercise caution
Humidity: 56%
Moderately humid conditions
Wind: 10.8 mph
Strong wind, exercise caution
Overcast
7-Day Forecast
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Temperature Trends
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Precipitation Trends
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Weather Summaries
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Weather data powered by Open-Meteo
Good to know
Peak season datesApril 18, 2025 - September 20, 2025 and April 17, 2026 - September 19, 2026.
Trash and recyclingNo specific details are provided about trash and recycling facilities at the campground.
Proximity to water featuresThe campground is near Jenks Lake and the Santa Ana River, offering fishing and boating opportunities.
Campground Map
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.Camper Reviews
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Last updated August 10, 2025