Eugene to Cascade Summit. This journey through Oregon's scenic Cascade mountain range covers the 113 miles of Union Pacific track between Eugene and Cascade Summit. Climbing 4,422 feet in elevation, you'll view numerous tunnels, rock sheds, bridges, horseshoe curves and 40 miles of 1.6% grade as well as plenty of diesel action, piggyback trains, Amtrak's Coast Starlight, and more. 1 hr. 49 min. #0RV2246