TSX Challenge

REI Berkeley: An Inspirational Trek Across the Sierra to Mt. Whitney
2025-06-17 19:00 - 20:30 (America/Los_Angeles) | REI Berkeley, 1338 San Pablo Ave, Berkeley, CA, 94702, United States
Why join?

Get inspired to complete a Trans-Sierra trek to the highest peak in the contiguous U.S, Mt. Whitney (14,505′).

About this talk

Co-founder of the Trans-Sierra Xtreme (TSX) Challenge, Chris Casado is passionate about exploring the Sierra backcountry. He has spent countless summers camping in secluded lakes basins, crossing high alpine passes, following rushing rivers, and climbing majestic peaks. Join Chris for a presentation of his favorite trans-Sierra adventure, a week-long 75-mile journey across remote sections of Sequoia and Kings Canyon National Parks to the summit of Mt. Whitney (14,505 feet). Learn the nuts and bolts of preparing for a multi-day backcountry trek, including gear, permits, Leave No Trace principles, and weather and safety considerations. Find out how motivated individuals of all ages can safely and confidently venture into the rugged beauty and tranquility of the Sierra.

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By signing up you will also subscribe to the TSX newsletter. You may opt out anytime.

Group size limit

40 participants

Format

Live event at REI Berkeley, California. 50 minute interactive presentation, followed by Q&A.

Your host

tsx.challenge TSX Challenge was founded in 2011 as a way to positively impact the lives of others through inspirational backpacking experiences.

Related treks

Sequoia & Kings Canyon National Parks

Trans-Sierra Xtreme Challenge

1 Week | 75 Miles | July, Aug, Sept

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July 17 – 25, 2026, July 24 – Aug 1, 2026, July 31 – Aug 8, 2026 (Waitlist), Aug 7 – 15, 2026, Aug 21 – 29, 2026 (Waitlist), Sept 4 – 12, 2026

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John Muir Wilderness

Hell For Sure Challenge

6 days | 40 Miles | JUNE, JULY, AUG, SEPT

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June 28 – July 3, 2026, July 18 – 23, 2026, Aug 1 – 6, 2026 (Waitlist), Aug 8 – 13, 2026 (Waitlist), Sept 5 – 10, 2026

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Grand Canyon South Rim

The Confluence

7 days | 50 Miles | MAR, OCT

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March 22 – 28, 2026, Oct 11 – 17, 2026 (1 spot remaining)

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Yosemite National Park

Triple Divide Challenge

6 days | 48 Miles | July

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July 23 – 28, 2026

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What’s In Our Backpack? Gear We Use When Backpacking
2025-05-21 18:00 - 19:00 | TSX Online Event hosted via ZOOM, PO Box 344, Shaver Lake, CA, 93664, United States
Why join?

Get inspired to complete a Trans-Sierra trek to the highest peak in the contiguous U.S, Mt. Whitney (14,505′).

About this talk

You don’t need high end expensive gear to go backpacking in the Grand Canyon. We’ll empty our pack and show you exactly what we take on each trip. Space is limited. Please register to receive Zoom invite link.

Buy Tickets on Eventbrite

Register to Attend

By signing up you will also subscribe to the TSX newsletter. You may opt out anytime.

Group size limit

45 participants

Format

Live Zoom call, 40 minute interactive presentation, 20 minute Q&A

Your host

tsx.challenge TSX Challenge was founded in 2011 as a way to positively impact the lives of others through inspirational backpacking experiences.

Related treks

Grand Canyon North and South Rims

Rim-to-Rim Xtreme Challenge

6 days | 42 Miles | May, Oct

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May 5 – 10, 2026 (R2R2R!), May 11 – 16, 2026 (R2R2R!), Oct 4 – 9, 2026

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California’s King Range

Lost Coast Challenge

4 Days | 25 Miles | April, May, June

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April 20 – 23, 2026 (Waitlist), April 28 – May 1, 2026 (Waitlist), May 5 – 8, 2026 (Waitlist), May 20 – 23, 2026 (Waitlist), May 29 – June 1, 2026 (Waitlist), June 3 – 6, 2026 (Waitlist)

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Sequoia & Kings Canyon National Parks

Trans-Sierra Xtreme Challenge

1 Week | 75 Miles | July, Aug, Sept

View trek dates

Select Date
July 17 – 25, 2026, July 24 – Aug 1, 2026, July 31 – Aug 8, 2026 (Waitlist), Aug 7 – 15, 2026, Aug 21 – 29, 2026 (Waitlist), Sept 4 – 12, 2026

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Grand Canyon South Rim

Grand Canyon Challenge

4 days | 25 Miles | Mar, Apr, May, Sept, Oct, Nov

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March 6 – 9, 2026 (Waitlist), March 12 – 15, 2026 (Waitlist), March 18 – 21, 2026 (Waitlist), March 24 – 27, 2026 (Waitlist), March 30 – Apr 2, 2026 (Waitlist), April 5 – 8, 2026, April 10 – 13, 2026 (Waitlist), April 18 – 21, 2026 (Waitlist), April 22 – 25, 2026 (Waitlist), May 4 – 7, 2026 (Waitlist), May 10 –13, 2026, Sept 18 – 21, 2026, Sept 25 – 28, 2026, Oct 1 – 4, 2026, Oct 6 – 9, 2026, Oct 11 – 14, 2026, Oct 16 – 19, 2026, Oct 23 – 26, 2026, Oct 28 – Nov 1, 2026, Nov 2 – 5, 2026, Nov 6 – 9, 2026

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