The Trans-Sierra Xtreme (TSX) Challenge and Grand Canyon Xtreme Challenge are a series of inspirational guided backpacking treks across Kings Canyon and Sequoia National Park, and Grand Canyon National Park. They are among the most challenging and rewarding experiences that California and Arizona have to offer. You’ll traverse awe-inspiring terrain, completely unplugged, with a small group and incredibly experienced guides. While the treks can be intense, no prior backpacking experience is required and all ages are welcome. Just bring your mental toughness, positive attitude and be ready for the challenge of a lifetime.

Trans-Sierra Xtreme Challenge

1 week, 75 miles, with Mt. Whitney (14,507ft)

Map of Trans-Sierra backpacking trail to Mt. Whitney
All of our Trans-Sierra Xtreme Challenge experiences are based on the same one week, 75 mile trans-Sierra trail that crosses Sequoia and Kings Canyon National Parks to Mt. Whitney (14,505ft).

View trek dates and itinerary

Grand Canyon Xtreme Challenge

3 nights, 35 miles, loop with Colorado River

Map of Trans-Sierra backpacking trail to Mt. Whitney
All of our Grand Canyon Xtreme Challenge experiences are based on the same 3 night, 35 mile Grand Cayon loop that includes a trip to the Canyon floor and Colorado River with 4,500ft elevation loss/gain.

View trek dates and itinerary

Sample life on our trails

Click play, enjoy.

Video by Delanie Lowe

Join us in 2015 for an experience that will last a lifetime.

Serious wilderness.

You’ll spend one week, unplugged, traversing some of the most remote, least traveled regions of the Sierra with a small group and two incredibly experienced guides.

Lifelong memories.

Our treks are open to motivated individuals of all ages. So grab your kid, grab your parent, grab your best friend for life, and create memories that will last a lifetime.

Rugged inspiration.

Get knee-deep in high Sierra steams, scale snow covered passes, drop into remote canyons, summit jagged granite peaks. And we’re still keeping the best part a secret.