This post is about the best things to do in Colorado for summer vacation.
From towering mountain peaks to charming small towns, Colorado is one of those places that feels like it was made for summertime exploring. Whether you’re into hiking scenic trails, soaking in natural hot springs, driving jaw-dropping mountain roads, or just relaxing in a cute downtown with a cold drink, there’s something here for everyone.
But before you pack your bags, it’s good to know a few insider tips to make the most of your trip. The weather can change fast, the altitude can sneak up on you, and some spots get crowded if you don’t plan ahead. That’s why I put together this guide — packed with everything you need to know before visiting Colorado in summer, plus the best things to do once you get here.
Whether you’re aiming for iconic sights like Rocky Mountain National Park and Maroon Bells or looking for hidden gems in mountain towns and scenic byways, this list will help you plan an epic summer adventure.
Let’s dive in and start planning your Colorado getaway!
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“If words were water, the state would never run dry.” – John Hickenlooper
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Know Before You Go
Weather Changes Fast
Even in summer, Colorado weather can be unpredictable. It might be sunny in the morning and stormy by the afternoon, especially in the mountains. Always carry a light jacket or rain shell with you.
Altitude Is Real
Depending on where you go (Denver is a mile high, but mountain towns are much higher), you might feel the effects of the altitude — headaches, dehydration, shortness of breath. Drink a lot of water, take it easy on your first day, and limit alcohol at the start.
Pack for Layers
Summer days can be hot (80s or 90s°F), but mornings and nights cool down fast, especially in the mountains. Pack shorts and t-shirts, but also long pants, hoodies, and a jacket.
Sunscreen Is Essential
The sun is stronger at higher elevations. Even if it’s cool or cloudy, you can burn much faster than you’re used to. Sunscreen, hats, and sunglasses are must-haves.
Afternoon Storms Are Common
In the mountains, it’s typical for thunderstorms to roll in after noon. If you’re hiking or doing outdoor activities, start early — many hikers aim to be done by noon to avoid lightning risk.
Book Accommodations Early
Summer is a super popular season for Colorado (hiking, rafting, festivals, road trips). Hotels, campgrounds, and vacation rentals fill up quickly, especially in mountain towns like Aspen, Vail, and Telluride.
Wildlife Is Active
You might spot elk, deer, marmots, and even bears — especially if you’re exploring national parks like Rocky Mountain National Park. Keep a safe distance, never feed animals, and store food properly if you’re camping.
Stay on Trails
Colorado works hard to protect its natural beauty. Always stick to marked trails when hiking to avoid damaging fragile plants or ecosystems.
Plan for Traffic in Popular Spots
Places like Rocky Mountain National Park, Maroon Bells, and Garden of the Gods get very busy, especially on weekends. Arrive early in the morning or later in the evening for fewer crowds.
Respect Altitude Hiking Rules
If you’re doing a famous “14er” (a mountain over 14,000 feet), make sure you’re fully prepared. Early starts, proper gear, and good fitness are important. Thunderstorms above treeline can be deadly, so timing is everything.
Best Things to do in Colorado During Summer
1. Go Hiking in Rocky Mountain National Park
Rocky Mountain National Park is a summer dream filled with alpine lakes, wildflower meadows, and rugged mountain peaks. Popular hikes like Emerald Lake, Bear Lake, and Sky Pond offer unforgettable scenery. Summer brings wildflowers and wildlife, but also crowds, so it’s smart to start early. Timed-entry reservations are required in peak season, so book ahead.
2. Drive the Scenic Byways
Colorado has 26 official scenic byways, many of which climb high into the mountains. The Million Dollar Highway between Ouray and Silverton has steep drops and breathtaking views, while Trail Ridge Road in Rocky Mountain National Park reaches over 12,000 feet. Expect stunning vistas, pull-offs for photos, and possible wildlife sightings along the way. Always check road conditions before you go.
3. Explore Garden of the Gods
Located in Colorado Springs, Garden of the Gods is a free, public park famous for its towering red rock formations and views of Pikes Peak. You can hike, bike, rock climb, or even just drive through if you’re short on time. The Visitor and Nature Center is worth a quick stop for maps, exhibits, and great views. Sunrise and sunset are the best times to avoid the midday heat and big crowds.
4. Attend a Summer Festival
Summer is festival season in Colorado, and almost every mountain town has something going on. The Telluride Bluegrass Festival brings world-class musicians to one of the most beautiful valleys in the world. Crested Butte hosts a famous Wildflower Festival in July, with guided hikes and photography classes. Aspen, Breckenridge, and Steamboat Springs also throw arts, wine, and music festivals.
5. Whitewater Rafting
If you’re looking for adventure, Colorado’s rivers offer some of the best whitewater rafting in the country. The Arkansas River near Buena Vista is especially famous, with options ranging from mellow family floats to intense rapids like Browns Canyon and the Royal Gorge. Most outfitters provide half-day, full-day, and multi-day trips, and all safety gear is included.
6. Ride the Gondolas
In places like Telluride, Aspen, and Breckenridge, you can ride scenic gondolas even during the summer months. It’s a great way to get sweeping mountain views without hiking uphill. Telluride’s gondola is especially unique because it’s free and connects the town to Mountain Village, offering panoramic scenery at every turn. Most gondolas also have restaurants and hiking trail access at the top.
7. Camp (or Glamp)
Colorado is packed with amazing campgrounds in national forests, state parks, and even near towns. You can rough it with tent camping, bring your RV, or stay in luxury glamping tents with real beds and amenities. Some of the best camping is around Crested Butte, Steamboat Springs, and near Great Sand Dunes National Park. Be sure to reserve sites early, as they book up fast in summer.
8. Visit Maroon Bells
Located near Aspen, the Maroon Bells are two dramatic mountain peaks mirrored in a pristine alpine lake. They are often called the most photographed mountains in North America, and it’s easy to see why. Access is limited in summer — you’ll need a shuttle reservation from Aspen Highlands or a parking permit. Early morning is the best time for photos, when the lake is still and the light is soft.
9. Hit the Hot Springs
After a day of hiking or exploring, nothing beats soaking in a natural hot spring. Glenwood Hot Springs is one of the largest in the world, and nearby Iron Mountain Hot Springs offers a more boutique experience with multiple pools. Mount Princeton Hot Springs in Buena Vista has creekside pools and a full resort. Summer evenings are cooler, making it the perfect time for a soak.
10. Take a Scenic Train Ride
Historic railroads are a big deal in Colorado, and riding one is a great way to see remote wilderness without having to hike it. The Durango & Silverton Narrow Gauge Railroad winds through the San Juan Mountains alongside the Animas River. The Georgetown Loop Railroad offers a shorter, family-friendly ride with historic mining tours. Summer trains often have open-air cars, perfect for photos.
11. Mountain Biking and Road Cycling
Colorado is a biking paradise, whether you’re into downhill mountain biking or scenic road cycling. Fruita and Crested Butte are famous for their mountain biking trail networks, while Boulder and Fort Collins offer beautiful road rides. Many ski resorts (like Winter Park and Keystone) transform into bike parks with lift-served downhill trails in summer.
12. Explore Boulder’s Pearl Street Mall
Boulder’s Pearl Street Mall is a lively pedestrian area lined with restaurants, shops, galleries, and street performers. It’s the perfect place to relax after a hike or spend an afternoon people-watching. The nearby Flatirons offer iconic hikes like the First and Second Flatiron Trail, and Boulder Creek is a great spot to cool off in the summer.
13. Try Fly Fishing
Colorado’s rivers, creeks, and alpine lakes are filled with trout, making it a top destination for fly fishing. The Fryingpan River near Basalt is world-renowned for big rainbow trout, while the South Platte River and Gunnison River are also popular. Beginners can book a guided trip to learn the basics, while experienced anglers will find endless opportunities to cast.
14. Visit Mesa Verde National Park
Located in the southwest corner of the state, Mesa Verde protects some of the best-preserved Ancestral Puebloan cliff dwellings in the U.S. You can tour ancient structures like Cliff Palace and Balcony House (advanced tickets required for guided tours). Summer can be hot here — plan for morning visits, wear a hat, and bring lots of water.
15. Chase Waterfalls
Summer snowmelt creates some amazing waterfalls throughout Colorado. Bridal Veil Falls in Telluride is the tallest free-falling waterfall in the state, and you can hike or drive to it. Fish Creek Falls near Steamboat Springs is an easy-access waterfall just a short walk from the parking lot. Seven Falls in Colorado Springs has stairs that climb alongside a series of beautiful cascades.
