The best waterfall hikes and walks in San Bernardino National Forest

This easy 4.3-mile (7.0 km) out-and-back hike to Rainbow Bridge via the Pacific Crest Trail offers a delightful journey through varied landscapes, taking about 1 hour and 56 minutes to complete with a gentle 483 feet (147 metres) of elevation gain. You'll follow the winding banks of Deep Creek, transitioning between desert and lush riparian environments, with the vibrant, wooden Rainbow Bridge serving as a charming focal point. The trail provides continuous scenic views, including glimpses of the distant San Gabriel Mountains and unique desert flora.

When planning your visit, be mindful that this popular trail can get busy, so an early start is often a good idea. Temperatures in July can be extremely hot, so carrying ample water is crucial to avoid dehydration. While the trail is generally accessible for all skill levels, be prepared for potential wet crossings of Deep Creek, especially during winter and spring.

As a section of the renowned Pacific Crest Trail, this route offers more than just the Rainbow Bridge; you'll also pass by the impressive Mojave River Dam and have the option to extend your adventure to the Deep Creek Hot Springs. It's a family-friendly option that provides a taste of the PCT's diverse beauty in the San Bernardino National Forest.

Hike 14.0 miles (22.6 km) on this difficult trail through varied terrain to the natural Deep Creek Hot Springs in San Bernardino National Fo

Embark on the North Etiwanda Falls and Preserve Loop, a moderate hiking route that takes you through diverse landscapes. You'll cover 4.8 miles (7.7 km) with an elevation gain of 921 feet (281 metres), typically completing the journey in about 2 hours and 22 minutes. The trail begins with open chaparral, offering wide views of Rancho Cucamonga and the distant San Gabriel Mountains. As you progress, the scenery shifts dramatically, leading you into a lush riparian woodland. The highlight is Etiwanda Falls, where you'll discover green narrows and refreshing cascading water.

When planning your hike, be aware that much of the route lacks shade, so carry ample water and sun protection, particularly on warm days. The trailhead offers a designated dirt parking lot, but it tends to fill up quickly, especially on weekends. To secure a spot, consider arriving early in the morning. Please note that dogs are generally not permitted on this trail. This preparation will help ensure a more comfortable and enjoyable experience.

This trail is nestled within the North Etiwanda Preserve, a significant natural area in the foothills of the San Bernardino Mountains. It provides a unique opportunity to experience a transition from arid chaparral to a vibrant riparian ecosystem. In spring, you might also be treated to a display of wildflowers along the path, adding another layer of natural beauty to your adventure.

The Etiwanda Falls Trail offers a delightful journey through changing landscapes, starting in open chaparral with panoramic views of Rancho Cucamonga before transitioning into a lush riparian canyon. The main draw is the 15-20 foot Etiwanda Falls, a refreshing oasis nestled among white alder trees, providing a perfect spot to cool off. While rated easy, the 3.2-mile (5.2 km) out-and-back route involves a steady uphill climb with 744 feet (227 metres) of elevation gain, taking about 1 hours and 38 minutes, so sturdy footwear is recommended for the rocky sections.

When planning your visit, be aware that parking at the North Etiwanda Preserve trailhead can fill up fast, especially on weekends, so arriving early is a good strategy. There are no restrooms on the trail, and dogs are not allowed. Since much of the path is exposed, remember to bring ample water and sunscreen. The best time to experience the trail is typically after rainfall or during spring, when the waterfall is at its most impressive and wildflowers bloom along the route.

Beyond the natural beauty, the Etiwanda Falls Trail also offers glimpses into the region's past, with remnants of late 19th-century water pipes and an overflow drain visible along the way. This historical context highlights the area's long-standing connection to water management. The trail's ability to showcase a transition from arid chaparral to a vibrant riparian ecosystem within a relatively short distance makes it a unique and educational experience in the Rancho Cucamonga area.