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Driving

What is best route from DiA to Boulder?

Driving from Denver International Airport (DIA) to Boulder is generally straightforward and scenic, taking you from the airport’s plains toward the foothills of the Rocky Mountains. The distance is about 33–36 miles, depending on the route, and typically takes 35–50 minutes under normal traffic conditions.

Here are the main routes you can consider:

  • Route 1: E-470 Toll + US-36 (Fastest & Commonly Recommended)
    • From DIA, follow signs to E-470 West (toll road) toward Boulder/Denver.
    • Take the exit for US-36 West toward Boulder.
    • US-36 is a divided highway that goes directly to Boulder, passing through Broomfield.
    • Advantages: Fastest route, avoids city streets until you reach Boulder; fewer stoplights.
    • Notes: E-470 is a toll road, so have cash or electronic pass (or pay online afterward).
  • Route 2: I-70 West + CO-119 (Alternative Scenic Route)
    • From DIA, take I-70 West toward Golden/Denver.
    • Exit onto CO-119 North (Boulder Canyon Drive) toward Boulder.
    • This route is more scenic, following Boulder Creek through the canyon.
    • Advantages: Beautiful views of the foothills and mountains; popular for first-time visitors.
    • Notes: Can be slower, especially in bad weather or peak hours, and has more curves.
  • Route 3: I-70 West + CO-93 North (Alternate Option)
    • From DIA, take I-70 West toward Golden.
    • Exit onto CO-93 North (Golden–Boulder Highway) into Boulder.
    • Advantages: Direct into west Boulder; can be useful if visiting western parts of the city or the Flatirons.
    • Notes: Smaller highway than US-36, so more traffic lights and slower in rush hour.

Additional tips:

  • Check traffic apps (Google Maps, Waze) before departing. US-36 is usually reliable, but rush hour can add 15–20 minutes.
  • If you want a smooth and predictable drive, E-470 + US-36 is the most consistent, though tolls apply.
  • For a scenic introduction to the mountains, CO-119 through Boulder Canyon offers great photo opportunities.
  • Allow extra time if you are unfamiliar with mountain roads, especially in winter months when conditions can change quickly.

In summary: For speed and simplicity, E-470 + US-36 is generally the best. For scenery, consider CO-119 through Boulder Canyon. Either route will get you safely to Boulder from DIA.

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