I got lucky enough to go on a Selway river trip, arguable the hardest permit to get in the country. Five days of challenging whitewater, fishing, trail running, and great company, it made the 17 hour drive each way worthwhile.
NAU Professor Mike Smith, Amy Wolkowinksi, and I helped lead a NAU alumni trip down the Grand Canyon organized by Wayne Ranney and CRATE expeditions. It was nine days of great geology, conversations, and people.
Wayne Ranney's writeup of it is located on his blog located here.