You are not crazy. My wife and I are about the same age, and we've backpacked around 100-150 miles each of the last few years. Just take it easy, enjoy yourself, and you'll keep coming back for more.

WE sure do.

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Check our our website: http://www.backpackthesierra.com/

Or just read a good mystery novel set in the Sierra; https://www.amazon.com/Danger-Falling-Rocks-Paul-Wagner/dp/0984884963