REI Berkeley: An Inspirational Trek Across the Sierra to Mt. Whitney
Get inspired to complete a Trans-Sierra trek to the highest peak in the contiguous U.S, Mt. Whitney (14,505').
Get inspired to complete a Trans-Sierra trek to the highest peak in the contiguous U.S, Mt. Whitney (14,505').
Join as we share details for our first international trek across the breathtaking Arctic wilderness of Baffin Island.
Step off the John Muir trail with TSX co-founder Chris Casado and get to know some of the High Sierra’s less-traveled routes.
Get inspired to complete a Trans-Sierra trek to the highest peak in the contiguous U.S, Mt. Whitney (14,505').
Join us for a fun, informative digital presentation covering all you need to know to complete a multi-night Grand Canyon backpacking trek.
Get inspired to explore Northern California's remote Lost Coast trail by foot.
Pick up some fresh meal ideas as well as tips on how to plan and prep for your next backpacking adventure.
We'll empty our pack and show you exactly what we take on each trip backpacking the Sierra and Grand Canyon.
If you've never been backpacking, start here! Get a brief intro to gear, logistics and safety and get your questions answered.
Join us for a small group talk led by TSX Challenge co-founder Chris Casado and discover three trans-sierra routes to Mt. Whitney.
Get inspired to explore the Grand Canyon by foot on a fun and informative digital journey backpacking along the Escalante Route.
Join us to explore off-trail routes in a relatively unknown slice of heaven south of Yosemite and north of Kings Canyon.
Every new year deserves a new goal, and we’re making it easy to set a new goal with the whole crew. For a limited time, book a 2026 TSX Challenge trek save and up to $1000 when you sign up together. The more friends you bring, the bigger the adventure and the savings:
2 Hikers: Save $100 each
3 Hikers: Save $150 each
4 Hikers: Save $250 each
No need for a promo code; discounts apply automatically as you add participants to your booking, and reduce the deposit due today. Trek availability is limited.
For a limited time, we’re offering a $150 REI gift card to new participants who join one of our 2026 backpacking experiences. With REI Adventures closed, we invite you to join us at TSX Challenge. Here’s how it works:
1. Find your trek
2. Use coupon code “REI” at checkout
3. Make $500 deposit by Feb 15th
The $150 gift card will be issued to you 60 days before your trek start date via email. Trek must be paid in full prior to issuance. This offer may not be combined with other offers. Promotion ends Feb 15th, 11:59pm.
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