Top Summer Destinations in A Complete Guide to Summer Hiking in Colorado
A field notebook from four summers of sunburn, trail mix, and high-altitude wonder.
The trail just outside Silverton, mid-July. The snowmelt streams were still roaring.
I remember the first real sting — not from a bee, but from the thin air at 11,500 feet. I was maybe twenty steps past the treeline on the trail to Mount Elbert, and my lungs felt like they were breathing through a coffee straw. The sun was ridiculous. My SPF 50 had sweated off somewhere around mile two, and my shoulders were already turning that shade of pink that would keep me awake that night. I sat down on a granite slab, fished a squashed granola bar from my pack, and watched a marmot scold me from a rock pile. That moment — equal parts miserable and electric — is the one I keep coming back to.
I've spent four summers now bouncing around Colorado's high country. I've slept in a muddy tent near Great Sand Dunes, paid $9 for a can of PBR in Breckenridge, and nearly cried with relief when I found a working water spigot outside Leadville. This isn't a polished brochure. This is what it actually feels like to lace up your boots and go.
Colorado in summer is not gentle. The afternoon thunderstorms roll in with a kind of personal fury. The trailhead parking lots fill by 6 a.m. The altitude will rearrange your priorities. But the payoff — the smell of ponderosa pine after a rain shower, the way Maroon Bells turns pink at sunset, the sheer, stupid beauty of a meadow full of columbines — that part is real. Here's everything I wish I'd known from the start.
The Essentials at a Glance
- ⛰️ Altitude is the main character. Denver is the Mile High City. The trails start at 8,000–12,000 feet. Acclimatize for at least one full day before pushing hard.
- 🌦️ Plan for lightning by noon. The standard rule: be below treeline by 1 p.m. Thunderstorms build fast, and exposed ridges turn into lightning magnets.
- 💧 Water is heavy and scarce. Carry at least 3 liters for a full day hike. A $10 Sawyer Squeeze filter lets you refill from streams — worth every gram.
- 📱 Cellular service is a rumor. Once you leave I-70 corridors, expect dead zones. Download offline maps (Gaia, AllTrails Pro) before you go.
- 🏕️ Campsites book 6 months out. Seriously. Rocky Mountain National Park and the Maroon Bells zone fill the day reservations open. Have a backup plan.
The Complete Summer Guide
1. Rocky Mountain National Park — The Classic That Earns Its Hype
Let me be honest: I hated Trail Ridge Road the first time I drove it. Not the views — those are absurd — but the rental car's brakes smelled like burning plastic for an hour after the descent. Still, this park is the reason people fly to Colorado. The Emerald Lake Trail is the gateway drug: 3.2 miles round-trip, gentle grade, and you pass three different alpine lakes. Go at sunrise. By 9 a.m. the parking lot at Bear Lake is full, and the trail starts to feel like a Manhattan sidewalk.
For a quieter day, point yourself toward the East Inlet Trail near Grand Lake. It's longer (7 miles one-way to Lake Verna), flatter, and you'll see maybe a dozen people total. I ate lunch there last July with a family of moose about 80 yards away. They ignored me completely. That felt like a gift.
Entry fee: $30 per vehicle for 7 days. Backcountry permits: $36 for a 3-night trip. My advice: skip the Bear Lake corridor on weekends. It's not worth the stress.
2. Maroon Bells — The Postcard View, Up Close
The Maroon Bells are the most photographed peaks in North America. And yes, they earn it. But here's the catch: the only way to drive to the trailhead between June and October is via a timed reservation ($10 plus park entry), or you take the shuttle from Aspen Highlands for $16 round-trip. I did the shuttle last August and spent the 20-minute ride talking to a retired couple from Ohio who had been coming back every year since 1988. "It changes a little each time," the wife said. "But mostly it just stays the same."
The Maroon Lake Loop is a flat, easy mile that anyone can handle. But the real magic starts when you push past the lake onto the Crater Lake Trail (3.6 miles round-trip, moderate). You get up close to the Bells themselves — the rock is a crumbling, maroon-hued sandstone that looks almost soft from a distance but will shred your hands if you try to scramble. I watched a guy in Patagonia shorts try to climb a talus slope and immediately regret every choice he'd ever made.
The sunrise light show at Maroon Lake is real, but so are the crowds. Instead of fighting for a spot at the main viewpoint, walk 200 yards east along the lake's south shore. You'll get the same reflection with zero elbows. Also — bring bug spray. The mosquitos near the marshy edges are ruthless in July.
3. Great Sand Dunes — The WTF Destination
The Great Sand Dunes National Park feels like a geographical mistake. A 30-square-mile field of sand, sitting at 8,000 feet, wedged against the Sangre de Cristo Mountains. It makes no sense. And it is glorious.
I drove down from Salida on a Tuesday morning in late June. The temperature hit 95°F on the sand by noon. I'd brought three liters of water and wished I'd brought four. Climbing the tallest dune (Star Dune, about 700 feet of loose sand) takes roughly 90 minutes of sliding back two steps for every three you gain. The view from the top is lunar and enormous — you can see the entire San Luis Valley spread out like a topographical map.
Entry fee: $25 per vehicle. Best time: early morning or evening when the sand is cool enough to walk barefoot. Pro tip: rent a sand sled from one of the shops outside the park entrance. It's $20 and the dumbest, most fun thing you'll do all summer.
4. Telluride — The Town That Almost Broke My Wallet
Telluride is beautiful and expensive in a way that feels almost aggressive. The box canyon setting is stunning — waterfalls pour down the cliffs on three sides. But a cup of coffee cost me $7.50 at a place near the gondola station. I'm not joking.
The hiking around Telluride is world-class, though. The Bridal Veil Falls Trail starts right at the east end of town and climbs 1,200 feet over 1.8 miles to the base of Colorado's tallest free-falling waterfall. It's steep and exposed. I got sunburned on my calves (I'd worn shorts — dumb move). But standing at the base of that 365-foot drop, feeling the mist on my face while the town looked like a toy village below — that was worth the price of admission.
If you want a quieter alternative, drive 15 minutes out of town to the Lizard Head Trail. It's less crowded and offers views of Wilson Peak (the one on the Coors can). I saw two other hikers in four hours. The silence was so complete I could hear my own heartbeat.
5. Salida — The Town That Gets It Right
I saved my favorite for last. Salida sits in the Arkansas River Valley at about 7,000 feet. It has a working-class feel — railroad town, whitewater rafting hub, surprisingly good food scene. The downtown is legitimately walkable, with a dozen breweries and a coffee shop (Brown Dog Coffee) that makes a latte so good I bought a bag of beans to take home.
The hiking around Salida is less famous but just as good as the big-name parks. The Agnes Vaille Falls Trail is a 1.6-mile round-trip that ends at a waterfall with a swimming hole deep enough to submerge yourself. I went on a 95° afternoon and the water temperature was maybe 45°F. My body seized up for a second, then I floated on my back staring at the pine canopy and felt like the luckiest person alive.
Cost tip: Salida is cheaper than Aspen or Telluride. A room at the Simple Lodge runs about $110 a night in summer. Dinner at Moonlight Pizza is $15 for a large pie. I ate there three times in four days. No regrets.
Summer Traveler's Pro Tips
- Acclimate the boring way. Sleep at 7,000 feet for two nights before you tackle anything above 10,000. I drove straight from Denver (5,280 ft) to Leadville (10,200 ft) on my first trip and spent the next morning vomiting into a bush. It's not a flex. The Alpine Loop Backcountry Byway near Silverton is littered with people who tried to do too much too fast. Don't be them.
- Your car will get trashed. The dirt roads to most trailheads are washboarded and sharp. A rental car agency will charge you $200 for a cracked windshield. I learned this the hard way near Cinnamon Pass. Either buy the extra insurance or rent a high-clearance vehicle. The Million Dollar Highway (US-550) is paved but terrifying — no guardrails, sheer drop-offs, and RVs the size of small houses.
- Farmers markets are the real food scene. The Durango Farmers Market on Saturday mornings has $5 tamales and local honey that will ruin supermarket honey forever. In Buena Vista, the Wednesday market sells bison jerky from a guy named Chuck who will talk your ear off about herd rotation. Eat there, not at the overpriced tourist restaurants on main street.
- Get a GPS messenger. I use a Garmin InReach Mini 2. It's $300 up front and $15/month for the basic plan. Worth every penny when you're stranded on a trail with no service and the afternoon thunderstorm is moving in faster than expected. I gave mine to a stranded hiker near Handies Peak who had twisted her ankle and couldn't walk out. She used it to text her friend. The thing paid for itself in karmic credit.
- Learn to read the clouds. If the cumulus clouds start building by 10 a.m. and look like cauliflower, you have until about 1 p.m. before the lightning starts. Turn around when you hear the first rumble, not after. The Fourteener community calls this "alpine roulette" — and people lose.
Common Summer Travel Mistakes
1. Trusting the weather forecast in the mountains. The forecast said "partly cloudy, 20% chance of rain" for my day on Mount Sneffels. I got caught in a hailstorm at 13,000 feet that left welts on my arms and turned the trail into a slip-and-slide. Mountain weather is hyperlocal. Check the National Weather Service spot forecast for your exact peak, not the town below.
2. Wearing cotton. This seems obvious, but I still see people hiking in cotton t-shirts and jeans in July. When you sweat and the afternoon wind hits, cotton will chill you to the bone. I made this mistake on the Colorado Trail segment near Kennebec Pass and spent a miserable hour shivering in the sun. Merino wool or synthetics. Full stop.
3. Ignoring the altitude on food. Your appetite drops above 10,000 feet. I force myself to eat even when I'm not hungry — nuts, cheese, tortillas, anything with calories. I forgot to eat lunch on a hike near San Luis Peak and bonked so hard I had to sit down for twenty minutes. A Cliff Bar and a packet of peanut butter fixed it, but I lost two hours of daylight.
4. Assuming all trails are well-marked. They are not. The Lost Creek Wilderness has sections where the trail disappears entirely into granite slabs. I spent 45 minutes wandering around near McCurdy Park before I found the next cairn. Always have offline maps. Always.
Your Summer Travel Checklist
| 📋 Category | Essentials | Nice to Have |
|---|---|---|
| Documents | ID, printed reservations, insurance card | National Parks pass ($80/year) |
| Heat prep | 3L water, electrolyte tabs, wide-brim hat | Umbrella for sun (seriously), frozen water bottles |
| Bookings | Campsite/tent reservation, parking permit | Backcountry permit, shuttle tickets |
| Offline apps | AllTrails Pro, Gaia GPS, offline maps | Weather app (NOAA), satellite messenger app |
| Gear | 10-layer system, waterproof jacket, headlamp | Trekking poles, bug spray, blister kit |
Traveler FAQ
A: Yes, for certain popular areas. Rocky Mountain National Park requires a timed entry permit ($2 plus park fee) from late May to mid-October. The Maroon Bells area requires a reservation to drive in. Most other trails are free and open, but parking at busy trailheads fills by 7 a.m.
A: That depends on your style. Salida offers affordable lodging, good food, and access to the Sawatch Range. Silverton is rougher but closer to the San Juan Mountains. Estes Park is convenient for Rocky Mountain National Park but expensive and crowded. I personally prefer Salida for its balance of price and access.
A: Ascend gradually. Sleep at 7,000–8,000 ft for one or two nights before going higher. Drink 3–4 liters of water daily, avoid alcohol for the first 48 hours, and eat high-carb meals. If you feel nauseous, dizzy, or get a headache that won't go away, descend immediately. Diamox (acetazolamide) requires a prescription and can help, but it won't fix bad planning.
A: Yes, but with precautions. Stick to popular trails, carry a satellite messenger, and tell someone your exact route and return time. The main risks are lightning, falls on loose rock, and getting lost in fog. I solo-hiked the 14ers near Graystone Peak and felt fine — but I had a Garmin, extra layers, and a healthy fear of thunderstorms.
A: Mid-July through mid-August offers the warmest weather and the best wildflower displays. Late June can still have snow on high passes, and September brings fewer crowds but cooler nights. August is peak monsoon season — expect afternoon thunderstorms almost daily. I've had great trips in all three months, but July is the sweet spot.
Ready for Your Summer Adventure?
I still think about that marmot sometimes. The one that scolded me on Mount Elbert. It was probably the same marmot that had been yelling at hikers for years — indifferent, permanent, utterly unimpressed. That's Colorado in summer. The mountains don't care about your itinerary or your new gear or your Instagram feed. They just sit there, ancient and vast, waiting for you to show up and try your best.
And you should show up. Not because it's easy — it's not. But because the moment when you're standing on a ridge at 13,000 feet, watching a thunderstorm roll across the valley below, feeling the wind push against your chest, and realizing you are so, so small — that moment is worth all the planning, the sweat, the overpriced coffee in Telluride.
Pack your boots. Bring extra sunscreen. And leave the expectations at home.
📌 Save this guide
Bookmark it, screenshot it, send it to your hiking buddy. And when you come back from your trip — sunburned, tired, grinning — drop a comment below with the trail that surprised you most. I'd love to hear where the mountains took you.
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