About the drive from Dallas to Boulder
This 809-mile route between Dallas, TX and Boulder, CO is a popular drive in the region. Expect roughly 13 hr behind the wheel under normal traffic conditions.
Fuel-saving tips
- Keep your speed near 65 mph — fuel economy drops sharply above 70.
- Fill up before mountain or desert stretches; remote stations charge a premium.
- Use GasBuddy or AAA to spot cheap stations along your route before you leave.
- Use cruise control on flat sections only — long climbs benefit from light, steady throttle.