Colorado is bigger and higher than most first-timers expect. A little structure turns a good trip into a great one, and it starts with five questions.
1. When should you go?
There is no bad season — only different ones. Here is the quick read; our best time to visit guide goes deeper.
Summit Express · Denver Airport ShuttleSkip the rental car & the I-70 driveThe Denver-airport shuttle we take every ski trip — and Breckenmendations readers save 5%, applied automatically at checkout. Private rides available too.Book & save 5% →| Summer (Jun–Aug) | Hiking, 14ers, rafting, wildflowers, festivals; warm days, afternoon storms |
|---|---|
| Fall (Sep–Oct) | Golden aspens, cool blue-sky days, fewer crowds — many locals’ favorite |
| Winter (Nov–Mar) | Ski and snowboard season, hot springs, holiday buzz |
| Spring (Apr–May) | Late-season skiing, early rafting, shoulder-season deals, mud-season quiet |
2. How many days do you need?
A weekend is enough to base in one town and ski or hike. Five days lets you pair a mountain town with a national park or a scenic drive. A week or more opens a real road-trip loop. See our sample Colorado itineraries for day-by-day plans.
3. How will you get around?
Nearly everyone flies into Denver International (DEN) and drives into the mountains — Summit County is about 90 minutes west on I-70. A rental car gives you the most freedom, though shuttles and even a ski train serve some towns. Winter driving over the passes is its own skill. We cover it all in getting around Colorado.
4. Respect the altitude
This is the mistake first-timers make. Denver is already a mile high, and the mountain towns sit at 8,000–10,000+ feet. Spend your first night lower, drink far more water than usual, go easy on alcohol, and ease into hard activity. Our altitude guide has the full playbook.
5. Where will you stay?
Pick a base that matches your trip. For a first visit, Summit County puts four ski resorts, hiking, and the mountains within easy reach; our statewide where to stay guide covers every region with live prices.
Where to stayFind your Colorado home baseCompare hotels and rentals in every mountain townCheck availability →What to pack
Colorado weather changes by the hour and the sun is intense at altitude, so layers, sun protection, and a rain shell are non-negotiable in every season. Start with our gear guides — the day-hike essentials and altitude & sun kit cover the basics for most trips, and our Colorado road trip packing list covers drones, kids’ gear, and car essentials for the drive.
Planning a Colorado trip FAQ
What is the best month to visit Colorado?
September is a local favorite for warm days, cool nights, golden aspens, and thinner crowds. July and August are peak summer for hiking and rafting, while December through March is prime ski season. The best month simply depends on whether you want snow or trails.
How many days do you need in Colorado?
A long weekend is enough to base in one mountain town and ski or hike. Five days lets you add a national park or a scenic drive, and a week or more supports a full road-trip loop through several regions.
Do I need a car in Colorado?
For most mountain trips, yes. A rental car from Denver International gives you the freedom to reach trailheads, towns, and scenic drives, though shuttles and a seasonal ski train serve some resorts if you would rather not drive the passes in winter.
How do I avoid altitude sickness in Colorado?
Spend your first night or two at lower elevation such as Denver, drink plenty of water, limit alcohol, and ease into strenuous activity for a day or two. Descending is the surest fix if symptoms get bad.