Euphemism for leaving the governor's mansion, without telling anyone where you're going, and then disappearing for a week while breaking up with your mistress in Argentina.
A: Where's Mark, his security detail and wife are wondering? B: Oh he's out Hiking the Appalachian Trail.
A: I hope he's wearing a condom.
by Schnyper June 24, 2009
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A back up method used by (R) Governors to see ones girlfriend/mistress when you are told "no" with your first choice.
A "plan B" when honesty just screws things up, interferes with the plans.

A getaway that is meant to be "without contact"
"Honey, would you mind if I go to Argentina and screw my girlfriend?"
Her response: "No way are you going to see your little slut!"

"Honey what I meant to say is I need some alone time to fix this marriage I think I'll go {"Hiking the Appalachian trail!"}

"I won't bring my phone so I won't be distracted from my marriage saving thoughts."
by Bison80 June 30, 2009
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Leaving your wife and kids and job to go sex up a hot Argentinean lady
Did you hear about Mark Sanford? He was totally hiking the Appalachian trail for 5 days last week!
by blarney230 June 24, 2009
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Cheating on your wife with some Argentine hussy sexpot.
Gov. Sanders of South Carolina was Hiking the Appalachian Trail on Father's Day instead of hanging out with his family.
by djnonsequitur June 24, 2009
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Made famous by South Carolina Governor Mark Sanford, it's a euphemism for when you're doing something nefarious.
Randy: Hey, were you out messin' around with that tranny again?

Daryl: Nah, dude. I was hiking the Appalachian Trail.
by Butler CW June 25, 2009
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Euphemism for sticking it in the butt of an Argentinian woman.
Governor Sanford (R) was furiously hiking the Appalachian Trail for several days over Father's Day weekend.
by ZezAzeZ June 24, 2009
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To have an extramarital affair in another country, especially South America.
South Carolina Governor Mark Sanford was hiking the Appalachian Trail last week and didn't tell anyone where he was, but he's really really sorry about it.
by Ken Starr June 24, 2009
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