What is I-70 like in winter between Denver and Vail?

Demanding. Chain and traction law is enforced on the corridor, the Eisenhower Tunnel and Vail Pass both close for weather and avalanche control, and a two-and-a-quarter-hour drive can become four. Our vehicles are all-wheel drive and our drivers run this corridor year-round rather than occasionally, which is the difference that matters on those days.