1Step 1 · Aviasales
Flights to DEN
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Gateway Road Trip · Colorado · Utah
Colorado National Parks Road Trip
Fly into DEN7–9 days~567 mi loop (straight-line)Trip snapshot
Arrival airport- DEN
Suggested stay- 7–9 days
Reservation demand- 4 stops · check each guide
Who this route is for
Built for visitors who want high mountain scenery and desert canyons on one loop, with a gateway airport served by many international flights.
Land in Denver, climb Trail Ridge Road in Rocky Mountain National Park, cross the mountains to Aspen, drop into the red-rock canyons of Moab and Arches, then return the car at DEN.
Start in Denver
Arrange your arrival, choose your wheels and get connected before the first park day.
Book in this order
2Step 2 · Motorhome Republic
Est. from $120/night · typical rate
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Motorhome or campervan
Professional fleets; check pickup hours and park vehicle limits.
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2Step 2 · Airport Rentals
Est. from $45/day · typical rate
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- ✓ Free cancellation on many rates
Car or SUV at DEN
Choose DEN pickup, dates and a standard car or SUV.
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3Step 3 · Vrbo
Est. from $120/night · typical rate
Stays near Denver
Choose your overnight stops and check dates on Vrbo.
Find cabins & homesBefore you go · Airalo
Mobile data for the U.S.
Check phone compatibility; download maps before entering the parks.
Get a U.S. eSIMBefore you fly: essentials for overseas visitors
Entry: ESTA or visa
Visa Waiver Program travellers need an approved ESTA before boarding. Apply only on the official U.S. government ESTA website and allow at least 72 hours.
Driving licence
A valid licence in the Latin alphabet is generally accepted for rentals; an International Driving Permit is recommended alongside it and required by some rental desks.
Timed entry at two parks
Rocky Mountain and Arches national parks have both used seasonal timed-entry reservations. Book each on Recreation.gov as soon as your dates are fixed.
Altitude
Denver sits at 1,600 m and Trail Ridge Road passes 3,700 m. Drink plenty of water and take your first day easy.
Independence Pass is seasonal
The direct road into Aspen usually closes from November to late May. Outside summer, use Interstate 70 via Glenwood Springs.
Desert heat in Moab
Summer days in Moab often pass 38 °C. Hike early, carry water and fill up before the empty stretch back across Interstate 70.
The loop, stop by stop
1Denver
Suggested: 2 days
Regional Timed-Entry and High-Altitude Access Requirements
~52 mi straight-line from Denver
2Rocky Mountain National Park
Suggested: 4 days
Regional Access and Timed-Entry Reservation Essentials
~107 mi straight-line from Rocky Mountain National Park
3Aspen
Suggested: 3 days
Plan Your Seasonal Mountain Access and Landmark Reservations
~151 mi straight-line from Aspen
4Moab
Suggested: 4 days
Arches National Park Timed Entry Reservations
- Return to Denver and drop the car at DEN.
Experiences worth planning ahead
Guided tours along the loop: choose what fits your route and allow time for the meeting point.
Curated Trip Essentials
Five picks for Colorado Rockies Loop from Denver
Water on walking days
2L Hydration Pack
Carry drinking water on longer walks; refill before leaving services.
Eye protection
Polarized Cycling Sunglasses
Wrap-around cycling sunglasses with polarized lenses and a lightweight TR90 frame, according to the listing.
Sunny outdoor stops
Cooling Neck Gaiter
A light neck covering for sunny walks; use alongside sunscreen, not instead of it.
Day-walk storage
30–35L Hiking Daypack
Carry spare layers and walking supplies; check fit and use a liner for valuables.
Wildlife & night viewing
WG9801 4K Night Vision Binoculars
3″ HD display · 48MP photo · 8X digital zoom. Check park rules before using lights at night.
$189.99 USD · store price
Shop at WILDGUARDEROptional picks, not a complete packing or safety list. Photos from the ROCKBROS and WILDGUARDER stores. Prices as of 2026-10-19 / 2026-10-20; price, stock and shipping may change.
Quick answers
How many days do I need for Denver, Rocky Mountain and Moab?
Plan 7 to 9 days: one night in Denver at each end, two at Rocky Mountain, one or two in Aspen and two in Moab for Arches and Canyonlands.
Can I return the rental car in Denver?
Yes. The loop returns to Denver, so you can drop the car at DEN and usually avoid one-way fees.
When is the best time for this loop?
Late June to September opens every mountain road. May and October are cooler in Moab but some high passes may be closed.
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