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American Rivers

Sweepstakes Closed

The deadline to enter the 2026 Raft the Last Wild River Sweepstakes has passed, but you can still make a gift below to protect clean water, restore rivers, and ensure special places like the Yampa River are there for the people and wildlife who depend on them.

Give monthly to enter now

Our rivers are the heart of our wild spaces and the source of our clean water. Right now, you can win the trip of a lifetime while supporting American Rivers’ work to make every river clean and healthy.

Join American Rivers with a monthly gift of $10 or more by March 31, and you’ll be entered to win an all-inclusive 4- or 5-day rafting journey for two through the heart of the Yampa with OARS! Experience the "hero" of the Colorado River Basin firsthand, this trip is an unforgettable rafting adventure with stunning scenery, exciting rapids, and camping under the stars.

When you become a monthly supporter of American Rivers, you aren’t just donating—you’re joining a movement to protect the rivers that sustain us all.

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OARS Yampa River Rafting Trip Highlights

The Yampa River is the one major tributary in the Colorado River system that runs wild and free straight to the heart of Dinosaur National Monument. For three months a year (May-July), the Yampa River flows free with fresh, surging run-off from miles above—waters originating from the melting snows and glaciers of the world-famous Colorado Rockies.

  • Exciting Class III-IV whitewater
  • Striking canyons of red, yellow & orange
  • Active trip with hiking & paddling
  • Native American & outlaw history
  • Explore Dinosaur National Monument

 

Colleen Miniuk
Prize is valid for the 2026 or 2027 rafting seasons. Travel dates are subject to availability and OARS departure schedules. No purchase or payment is necessary for entry. See Official Rules for complete details.