via I-70
The drive from Denver to Billings takes approximately 8h, covering 550 miles via I-70. Under normal conditions, expect to spend around $64 on gas.
Travel time can vary — during rush hour or bad weather, the journey may take 11–12+ hours. For the fastest trip, avoid peak commute hours.
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Crosses the Rocky Mountains with stunning scenery. Mountain passes can be challenging in winter.
This trip can typically be done on a single tank of gas.
For a long drive like Denver to Billings, plan to depart early in the morning. This lets you cover most of the distance before afternoon traffic builds up. Consider breaking the trip with a lunch stop midway.
✈️ Flying is faster when you factor in airport time. Flight time is ~1h 6m but add ~2.5 hours for check-in, security, and boarding.
Estimated times and prices. Bus/train availability varies by route. Driving gives the most flexibility for stops and schedules.
Popular cities along the route for rest, food, or fuel:
Planning a trip from Denver to Billings? The most common route runs along I-70, covering 550 miles in about 8h. Gas will set you back roughly $64 for the one-way trip. For the best experience, hit the road during mid-morning (9-11 am) when traffic is lightest.
Covering 550 miles, this epic drive takes you across a huge swath of the country. Prepare for varied weather conditions, different speed limits by state, and long stretches between services. A well-planned itinerary makes all the difference. Popular stopping points include Casper, Laramie, Cheyenne — great options for grabbing a meal, fueling up, or stretching your legs.