Boulder: how to get there and around
Airports, stations, ports, where the hotels are and what the numbers say, from public data rather than a brochure.
Boulder is a city of 106,803 people in United States (Colorado), 1,630 m (5,348 ft) above sea level. The nearest large airport is Denver International Airport (DEN), 54 km (34 mi) from the centre.
Key facts
Daylight in Boulder runs from about 9 h 23 min a day in late December to 15 h 4 min in late June (computed for 40.01° latitude), which matters more than the forecast when a day is built around one flight or one crossing.
Getting there
Boulder is served by 2 airports with scheduled flights within 100 km. The closest large one is Denver International Airport (DEN), 54 km (34 mi) from the centre, whose 16,000-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Rocky Mountain Metropolitan Airport (BJC, 18 km).
Flights to Boulder: every airport, routes and times
Buses to Boulder · Driving and car hire
Nearby cities, and how to get between them
- Denver, 39 km — buses · car rental · tours
- Colorado Springs, 137 km — buses · car rental · tours
- Aurora, 49 km — buses · car rental · tours
- Fort Collins, 65 km — buses · car rental · tours
- Lakewood, 38 km — buses · car rental · tours
- Thornton, 30 km — buses · car rental · tours
- Westminster, 28 km — car rental · tours
- Arvada, 28 km — car rental · tours
- Centennial, 59 km — buses · car rental · tours
- Pueblo, 204 km — buses · car rental
Twin towns and sister cities: Dushanbe, Ramat Negev Regional Council, Yamagata.
Common questions
Which airport serves Boulder?
Denver International Airport (DEN), 54 km (34 mi) from the centre, plus 1 other airport with scheduled flights within 100 km.
How big is Boulder?
About 106,803 people live in Boulder, across 67 km² (GeoNames and Wikidata).
What time zone is Boulder in?
America/Denver, currently UTC-6.
What currency is used in Boulder?
The Dollar (USD). Traffic drives on the right.
Which cities are near Boulder?
Denver (39 km), Colorado Springs (137 km), Aurora (49 km), Fort Collins (65 km), Lakewood (38 km).
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 13 September 2026. Hotel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.