menu account_circle

Twin Peaks

Quick facts

Distance Ultra marathon

About Twin Peaks

The Santa Ana Mountains are a short peninsular mountain range along the coast of Southern California in the United States. They extend for approximately 61 miles (98 km) southeast of the Los Angeles Basin largely along the border between Orange and Riverside counties. Indian Truck Trail is a fire road that climbs up the eastern slopes of the Santa Ana Mountains in Riverside County between Lake Elsinore and Corona. It is roughly six miles long and climbs about 3,000 before connecting up with the Main Divide Truck Trail that runs along the peaks of the entire Santa Ana mountain range.

The annual Twin Peaks Ultra is a fantastic race with great support and a beautiful course. Fun and challenging race in the beautiful Santa Ana Mountains, on Indian Truck Trail, only the truly tough finish the 50 mile race.  If you are looking for a fun, challenging and beautiful ultra, then Twin Peaks is for you. 



Lodging available at: Holiday Inn Express & Suites, Corona CA

Aid Stations

There are 17 Aid Stations that provide essentials such as water, electrolytes, soda, salty and sugary snacks and at least one hot food aid station (and hot food at the finish line).

Award Medals

All entrants will receive a long sleeve tech shirt. Finishers will receive a finishers award. Cash prizes are available. 50M 1st Male & Female overall: $250 cash + Bistro Coffee Mug + Free Race in 2017. 50M 2nd Male & Female overall: $100 cash. 50M 3rd Male & Female overall: $50 cash. 50M Course Record Bonus (Male & Female): $100 cash.

Equipment Storage

Drop bags will be located at Santiago Peak (miles 22 & 42). Please have your drop bags to the start on time and label them with your name, bib#, & race distance.

Maximum Time

16.5 hrs


Runners must have completed a trail ultra with 5000'+ Gain to enter the 50 Mile race.


Indian Truck Trail





Santa Ana Mountains

Chino Hills

Cleveland National Forest

Santa Ana River


The race starts at an elevation of 1,200' with about a 6.5 mile climb up Indian Truck Trail. A full aid station awaits at the top (3,800' Mile 6.5). After a VERY short "flat-like" section, runners climb up Main Divide and pass by Trabuco Peak (4,613').

Runners continue on Main Divide and go downhill for a "few" miles. At mile 10.5 you will pass the West Horsethief Aid Station (4,100') and turn right going down the steep but runable trail. After 1 mile you will stay right to get on Trabuco Trail which will eventually lead you past some cabins and into the Holy Jim (1,700' Mile 14.5) Aid Station. Fill up at the full aid station and head up Holy Jim Trail past some more cabins. In about 1 mile you will see a signpost that says "Main Divide Road". Follow this sign and turn left (unless you want a detour to the falls).

The climb up Holy Jim Trail will present you with beautiful views of the surrounding canyons and peaks. This may or may not take your mind off the relentless but runable (for some) climb filled with numerous switchbacks. You will eventually come out on Main Divide Trail and the Water-Only (and unstaffed) Bear Springs Aid Station (4,000' Mile 19.0). You will turn left on Main Divide Road and make your way up to the Santiago Peak full Aid Station (5,687') which is the high point of the race. Turn around here and run back down.

About 1.5 miles down from the summit, you need to turn left down the Upper Holy Jim singletrack (don't miss it!). This scenic 1.5 mile section will drop you out onto Main Divide Road at the radio-only Upper Holy Jim Aid Station (4,000' Mile 25.0). From here you will turn right onto Main Divide Road (or turn left if you are dropping to the 50K). Continuing to the right assures that you will either finish the 50 Mile distance or get a DNF. In just a half mile you will take a left turn at the Bear Springs Water Aid Station and go back down the Holy Jim Singletrack. At mile 29 you will stay right and NOT go to the Falls. Mile 30 will find you back at the full Holy Jim Aid Station (1,700').

The substantial Twin Peaks elevation gain takes place almost entirely in the first 42 miles. Miles 30-33 are very runnable. At mile 33 you will need to turn left and go up the West Horsethief Trail. You will climb up to the West Horsethief Aid Station (4,100' Mile 34). From here you will turn left on Main Divide Road, go UP and past Trabuco Peak again (enjoy the descent on the other side!) and reach the Indian Truck Trail (3,800') Full Aid Station at mile 38. You will continue on Main Divide Road, past the Radio-Only aid station at the bottom of Upper Holy Jim and past the water-only aid station of Bear Springs (4,000) at mile 39.5. Continuing on Main Divide Road, you will reach the summit of Santiago Peak (5,687' Mile 42) for a second time. You will turn around here and run back down.

If you have made it this far, the race is in the bag. Many of you will be desending into the darkness and if you are lucky will see a gorgeous sunset from the summit. About 1.5 miles down from the summit, you need to turn left down the Upper Holy Jim singletrack. 1.5 mile section will drop you out onto Main Divide Road at the radio-only Upper Holy Jim Aid Station (4,000' Mile 45.0). This time you wil turn left at Main Divide Road and make your way back to the Indian Truck Trail (3,800') Full Aid Station at mile 46. You will turn left down Indian Truck Trail and 6.5 miles of desecnt later - you will have compelted Twin Peaks

The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.