Big Bear and Lake Arrowhead get the crowds, but there's a quieter way into the San Bernardino Mountains — the city of San Bernardino itself. Expedia has named it the sixth-fastest-growing US destination for 2026, and the draw is straightforward: the same ridgelines and lake-and-forest scenery as its famous neighbours, but cheaper and far easier to reach.

Access is the big selling point. Metrolink's San Bernardino Line runs straight from Los Angeles Union Station to the city, so you can skip the car hire and the weekend traffic snarls that clog the roads up to Big Bear. The same train can get you close to Arrowhead and Big Bear too, but both need onward connections that complicate the trip.

Once you're there, the outdoors starts almost at the city limits. The San Bernardino Mountains and the San Bernardino National Forest wrap around town, with hiking trails, waterfalls and parks to the northwest, and the citrus-scented town of Redlands plus Box Springs Mountain Reserve to the southeast. Headline picks include a drive along the Rim of the World Scenic Byway for big mountain vistas (stick to its western and eastern ends to dodge the busier tourist towns), plus paragliding and hang-gliding operators who'll give you the view from above. Closer to ground level, Glen Helen Regional Park offers swimming, picnicking and fishing on two lakes, and hikers can aim for the twin Bonita and Hidden Falls, the Borea Canyon route via Daley Canyon Road, or the Marshall Peak Trail.

Timing matters if you want mild weather and lower rates. The sweet spots for hiking are April to June and October to December, when temperatures typically sit between 52 and 71 degrees Fahrenheit. On hotels, the numbers bounce around: data from HotelsCombined and Kayak shows spring rates peaking near $295 a night in March, dropping to about $111 in April, staying low through September, then jumping to $223-$275 in October. Trivago disagrees, naming July the cheapest and September the priciest month — so treat those figures as a rough guide and book flexible rates where you can.

One caveat: this is wildfire country. The county fire authority says fires are now a year-round reality rather than a May-to-October event, so check conditions before you go and know the basic safety drill.

Who's this for? Anyone based in or flying into Los Angeles who wants a mountain fix without the weekend crawl up the mountain roads, and travellers watching their budget — lodging here routinely undercuts Big Bear and Lake Arrowhead. It works as a basecamp trip: sleep in San Bernardino, then fan out to the byway, the falls and the forest.