Car
- Companies: Alamo, Enterprise, Hertz
 - Duration: Approximately 7 hours
 - Distance: 600 km
 - Costs: €70 for rental fees, €30 for fuel, €15 for tolls (total: €115)
 - Roads/Routes: I-70 E and US-183 S
 
Pro Tip: Make sure to take breaks at rest areas along I-70 to stretch and refresh, especially at the US-183 intersection.
To travel from Denver, CO to Hays, KS, renting a car is the most efficient option. This route will take you along I-70, which is a well-maintained interstate with plenty of amenities and scenic views. Ensure to check the weather conditions before your trip for a smooth journey.