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One of the easiest hikes in the San Diego area…if you're a mountain goat

The climb to Three Sisters is well worth it

Descent into the canyon
Descent into the canyon

While some in North America still shovel snow, San Diegans have the perfect venue for a hot March day — Three Sisters Falls, for a plunge in the frigid mountain water. The trail down to Boulder Creek is rated as one of the hardest short hikes in San Diego. The trail is steep, dropping approximately 1000 feet in elevation. Along with the elevation, the heat can be extreme if visiting during the summer. Temperatures can soar to 100 degrees, making water a primary planning consideration.

From the trailhead, the trail is almost two miles to the top of the falls. At the start of the trail, visitors are greeted with a wide, easy path. This section goes through open grassy areas with a variety of chaparral species including chamise, manzanita, and white sage. Across most of this open area are large sections of Engelmann oak (Quercus engelmannii). These gorgeous blue-green-leafed oaks are one of the many evergreen trees found throughout Southern California. They are drought deciduous, which means that they can drop their leaves to conserve water when stressed.

Boulder scrambling and slippery rock

The slope quickly narrows as it descends to Sheep Camp Creek. At the creek crossing, the trail flattens out and visitors are taken through a shaded riparian grove of oak and willow. Once through the grove, hikers encounter an eroded narrow trail that is very steep. If necessary, visitors can rest before making their final descent to the canyon floor, as there are many spots allowing folks to sit off trail and out of the way of other travelers.

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The steepest and last section of trail drops approximately 400 feet before reaching the canyon floor. This final section has anchor ropes that can be used as handholds to safely navigate the slope. The descent increases in steepness as you continue down into the canyon, with the final section requiring bouldering to reach the canyon floor. Upon reaching the bottom, the real hike begins and visitors must climb the remaining quarter mile up stream to the falls.

The path up to the falls is well marked, but visitors will have to climb over large sections of boulders to reach the top as they navigate up Boulder Creek Canyon. These rock surfaces can be very slippery. An additional watch-out is the poison oak, which is all along the trail, and during the warmer seasons, be on the lookout for rattlesnakes.

Waiting to descend

The climb is well worth it, as visitors are greeted by the trail’s namesake — the Three Sisters. The lower falls can be a trickle during the heat of summer, but in a wet winter, it becomes a rushing torrent that drops 20 feet into the pool below. The path to the top section requires more rock scrambling and the use of ropes anchored into the granite walls. Once at the top, the view of Boulder Canyon and the Three Sisters is breath-taking.

Of course, what comes down must go up! Visitors will have to hike back up the nearly two miles of trail and 1000 feet of hillside to get back to the trailhead and their vehicles. More information can be found with a search of Three Sisters Falls that shows the 45-degree sections and terrain needed to be crossed. Another option is to pass the trail turning left to Three Sisters Falls and continue to Eagle Peak.

Map to Three Sisters Falls

Three Sisters Falls

Distance from downtown San Diego: approximately 65 miles. Allow 1.5 hours driving time (Cleveland National Forest). From I-8, exit north on SR-79 and then head west on Riverside Dr. Turn west on Viejas Grade then make an immediate right past the store onto Oak Grove Dr. Turn right on Boulder Creek Rd. and drive 13 miles (7 miles is on a well-kept dirt road) to a hairpin turn that intersects Cedar Creek Rd. and the trailhead. The trailhead is for both Three Sisters Falls and Eagle Peak with Cedar Creek Fire Rd. slightly to the north. Park near the hairpin turn with an USFS Adventure Pass in view. The Boulder Creek Rd. trailhead also can be accessed via Engineers Rd. from Lake Cuyamaca. It is a shorter route but has many hairpin turns.

Hiking length: approximately 4 miles out-and-back.

Difficulty: Strenuous with steep slopes with 1000 feet elevation loss/gain from the highest point to the canyon floor. The trail is not maintained and has severe erosion in some areas. Proceed at your own risk over loose sand and slippery rocks with boulder scrambling. A couple of spots have ropes due to the steepness. Dogs are allowed but are discouraged as the trail descending into the canyon is not appropriate for pets. Open fires are not allowed. At least two liters of water, gloves, and good hiking shoes/boots are recommended for this trail. No facilities.

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Descent into the canyon
Descent into the canyon

While some in North America still shovel snow, San Diegans have the perfect venue for a hot March day — Three Sisters Falls, for a plunge in the frigid mountain water. The trail down to Boulder Creek is rated as one of the hardest short hikes in San Diego. The trail is steep, dropping approximately 1000 feet in elevation. Along with the elevation, the heat can be extreme if visiting during the summer. Temperatures can soar to 100 degrees, making water a primary planning consideration.

From the trailhead, the trail is almost two miles to the top of the falls. At the start of the trail, visitors are greeted with a wide, easy path. This section goes through open grassy areas with a variety of chaparral species including chamise, manzanita, and white sage. Across most of this open area are large sections of Engelmann oak (Quercus engelmannii). These gorgeous blue-green-leafed oaks are one of the many evergreen trees found throughout Southern California. They are drought deciduous, which means that they can drop their leaves to conserve water when stressed.

Boulder scrambling and slippery rock

The slope quickly narrows as it descends to Sheep Camp Creek. At the creek crossing, the trail flattens out and visitors are taken through a shaded riparian grove of oak and willow. Once through the grove, hikers encounter an eroded narrow trail that is very steep. If necessary, visitors can rest before making their final descent to the canyon floor, as there are many spots allowing folks to sit off trail and out of the way of other travelers.

Sponsored
Sponsored

The steepest and last section of trail drops approximately 400 feet before reaching the canyon floor. This final section has anchor ropes that can be used as handholds to safely navigate the slope. The descent increases in steepness as you continue down into the canyon, with the final section requiring bouldering to reach the canyon floor. Upon reaching the bottom, the real hike begins and visitors must climb the remaining quarter mile up stream to the falls.

The path up to the falls is well marked, but visitors will have to climb over large sections of boulders to reach the top as they navigate up Boulder Creek Canyon. These rock surfaces can be very slippery. An additional watch-out is the poison oak, which is all along the trail, and during the warmer seasons, be on the lookout for rattlesnakes.

Waiting to descend

The climb is well worth it, as visitors are greeted by the trail’s namesake — the Three Sisters. The lower falls can be a trickle during the heat of summer, but in a wet winter, it becomes a rushing torrent that drops 20 feet into the pool below. The path to the top section requires more rock scrambling and the use of ropes anchored into the granite walls. Once at the top, the view of Boulder Canyon and the Three Sisters is breath-taking.

Of course, what comes down must go up! Visitors will have to hike back up the nearly two miles of trail and 1000 feet of hillside to get back to the trailhead and their vehicles. More information can be found with a search of Three Sisters Falls that shows the 45-degree sections and terrain needed to be crossed. Another option is to pass the trail turning left to Three Sisters Falls and continue to Eagle Peak.

Map to Three Sisters Falls

Three Sisters Falls

Distance from downtown San Diego: approximately 65 miles. Allow 1.5 hours driving time (Cleveland National Forest). From I-8, exit north on SR-79 and then head west on Riverside Dr. Turn west on Viejas Grade then make an immediate right past the store onto Oak Grove Dr. Turn right on Boulder Creek Rd. and drive 13 miles (7 miles is on a well-kept dirt road) to a hairpin turn that intersects Cedar Creek Rd. and the trailhead. The trailhead is for both Three Sisters Falls and Eagle Peak with Cedar Creek Fire Rd. slightly to the north. Park near the hairpin turn with an USFS Adventure Pass in view. The Boulder Creek Rd. trailhead also can be accessed via Engineers Rd. from Lake Cuyamaca. It is a shorter route but has many hairpin turns.

Hiking length: approximately 4 miles out-and-back.

Difficulty: Strenuous with steep slopes with 1000 feet elevation loss/gain from the highest point to the canyon floor. The trail is not maintained and has severe erosion in some areas. Proceed at your own risk over loose sand and slippery rocks with boulder scrambling. A couple of spots have ropes due to the steepness. Dogs are allowed but are discouraged as the trail descending into the canyon is not appropriate for pets. Open fires are not allowed. At least two liters of water, gloves, and good hiking shoes/boots are recommended for this trail. No facilities.

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