01
Classic canyon climb
Icehouse Canyon Trail
Near Mount Baldy Village • Shaded Creekside Canyon Trail • Classic Local Challenge
A cool, boulder‑strewn canyon with a year‑round creek and big payoff views as you climb toward the high San Gabriels.[4]
Icehouse Canyon feels surprisingly alpine for being such a short drive from Ontario, with old stone cabin ruins, lush shade, and the sound of water most of the way.[4] Strong hikers can push up to Icehouse Saddle for panoramic views and connections to peaks like Cucamonga and Ontario, while casual hikers can turn around at any point and still feel they’ve had a full mountain day.
02
Big summit day
Ontario Peak via Icehouse Canyon
High Country Above Mount Baldy • High‑Elevation Summit Hike • Best For Strong Hikers
A demanding out‑and‑back that rewards the effort with sweeping views over the Inland Empire from a true high‑country summit.[2]
Starting up familiar Icehouse Canyon and continuing past the saddle, the trail to Ontario Peak strings together cool forest, rugged switchbacks, and a dramatic final ridge walk.[2] The summit’s rocky outcrop makes a natural perch to spot planes lining up for Ontario International Airport far below, so bring a camera and be ready for a full‑day outing with real elevation gain.
03
Waterfall crowd‑pleaser
Etiwanda Falls Trail
Rancho Cucamonga Foothills • Waterfall Canyon Walk • Best For Families
A mostly gradual dirt road climb to a shaded waterfall, popular for after‑school and weekend family hikes.[3]
At the edge of the Etiwanda Preserve above Rancho Cucamonga, this wide path gains steady but manageable elevation to a tucked‑away cascade and picnic‑friendly streamside nooks.[3][4] Views open over the valley on the way up, and the shaded grove at the falls is a welcome cool‑down spot, making it a solid pick for mixed‑ability groups as long as you’re ready for sun and some crowds.
04
Short, steep workout
Potato Mountain Wilderness Trail
Above Claremont Wilderness • Steep Local Peak Trail • After‑Work Workout
A no‑nonsense climb from the foothills to a rounded summit known for its quirky painted potatoes and wide views.[4]
Potato Mountain is a favorite conditioning hike: the trail wastes no time gaining elevation, but the mileage is short enough to squeeze in before or after work.[4] On clear days you get a broad sweep of the Inland Empire and, in winter, snowcapped San Gabriels behind you, with the summit register and decorated potatoes adding a bit of local charm.
05
Easy city‑view walk
Mount Rubidoux Park
Downtown Riverside • Paved Hilltop Loop • Scenic City Stroll
A gently graded paved path spirals up a low peak above Riverside, mixing history, public art, and big‑sky sunsets.[6]
Just west of Ontario, Mount Rubidoux offers a mellow, dog‑friendly walk that still delivers a satisfying hill climb and a 360‑degree view from the top.[6] The wide paved route, stone bridges, and historic cross make it feel more like a European promenade than a rugged hike, which is exactly why locals flock here for sunset laps, casual hikes with visitors, and stroller‑friendly outings.