The Boulder Lake to Green River Lakes trek is one of the most scenic backcountry adventures in the Wind River Range of Wyoming, part of the greater Rocky Mountains. Known for its dramatic alpine landscapes, rugged granite peaks, and pristine wilderness, this trek offers a true wildland experience. Boulder Lake to Green River Lakes .
The trail connects Boulder Lake, located near Pinedale, Wyoming, to Green River Lakes, nestled at the northern gateway of the Wind River Range. Along the way, trekkers pass through high mountain passes, alpine meadows, sparkling streams, and glacial valleys. It is particularly famous for offering views of Squaretop Mountain, one of Wyoming’s most iconic peaks, as well as access to the Continental Divide Trail.
This trek attracts hikers and backpackers from the USA, UK, Australia, Germany, and beyond because it combines remote wilderness, wildlife encounters, and classic Rocky Mountain scenery.
Best Time to Visit
- Summer (Late June to Early September): Best window for trekking when snow has melted from higher elevations.
- Fall (September): Stunning foliage, cooler temperatures, fewer crowds, but early snow possible.
- Spring (May to June): Not recommended; trails often snowbound and river crossings dangerous.
Peak season is July and August, when wildflowers bloom and trail conditions are most stable.
How to Reach
By Air
- Closest Airports: Jackson Hole Airport (about 2.5–3 hours from Pinedale) or Riverton Regional Airport. Larger hubs include Salt Lake City International Airport (approx. 4.5–5 hours’ drive).
By Road
- From Jackson, WY: Take US-191 south to Pinedale, then follow local roads to Boulder Lake Trailhead.
- From Salt Lake City, UT: Drive northeast via I-80 and US-191.
- Access to Green River Lakes trailhead is via dirt/gravel road (about 52 miles from Pinedale).
By Train
- There are no direct train services to Pinedale or the Wind River Range. The best option is to reach nearby cities by air or bus and continue by car rental.
Entry Fees and Permits
- No general entry fee for hiking in the Wind River Range.
- Permits: Overnight camping may require a free or low-cost backcountry permit (subject to change).
- Fishing license: Required if you plan to fish in alpine lakes and streams.
- Some trailheads may charge small parking or recreation fees (approx. $5–$10 per vehicle, subject to change).
Food Availability and Meal Options
- On the trail: No food facilities are available. Hikers must carry their own meals.
- In nearby towns: Pinedale and Dubois offer restaurants, grocery stores, and supply shops before starting the trek.
- Suggested options: Dehydrated backpacking meals, protein bars, nuts, dried fruits, and lightweight snacks.
- Water is plentiful from alpine streams and lakes but should always be filtered or purified. Boulder Lake to Green River Lakes .
Packing List and Essentials
- Backpack (40–65L depending on trip length)
- Tent or lightweight shelter
- Sleeping bag (rated for mountain nights, often near freezing even in summer)
- Sleeping pad
- Sturdy hiking boots
- Layers of clothing (base layers, fleece, waterproof jacket, hat, gloves)
- Water filter or purification tablets
- Bear-proof food storage (bear canister or hanging system)
- Trekking poles
- Navigation tools (map, compass, GPS)
- First-aid kit
- Headlamp with spare batteries
- Cooking stove and fuel
Safety Tips and Local Regulations
- Wildlife: The Wind River Range is home to black bears and occasionally grizzly bears. Carry bear spray and follow food storage rules.
- Altitude: Trails range from 7,500 to over 10,000 feet. Be mindful of altitude sickness.
- Weather: Rapid changes are common. Afternoon thunderstorms are frequent in summer.
- Leave No Trace: Pack out all trash and minimize campfire use.
- Group size: Some wilderness areas limit large groups to protect the environment.
- River crossings: Use caution; water levels can be high during early summer snowmelt.
Tips for Beginners or First-Time Visitors
- Start with shorter day hikes in the Wind River Range before attempting the full trek.
- Acclimatize for a day or two in Pinedale or at lower elevations to reduce altitude risk.
- Plan for 4–7 days depending on pace and chosen route variations.
- Carry extra food in case of delays due to weather.
- Download offline maps; cell service is limited.
- Hike with companions, especially if new to backcountry trekking.
Local Customs or Cultural Etiquette
- The Wind River Range lies near the Wind River Indian Reservation, home to the Eastern Shoshone and Northern Arapaho tribes. Respect cultural heritage sites and avoid disturbing sacred areas.
- Hunting and fishing traditions are part of local culture; follow regulations and respect wildlife.
- Be courteous to fellow hikers and yield to uphill trekkers on narrow trails. Boulder Lake to Green River Lakes .
FAQs
Q1. How long does the trek take?
Typically 4 to 7 days, depending on pace and side trips.
Q2. What is the difficulty level?
Moderate to challenging due to high altitude, steep ascents, and remote wilderness.
Q3. What is the altitude?
Trail elevations range from about 7,500 ft (2,286 m) at Green River Lakes to over 10,000 ft (3,048 m) at passes.
Q4. Are restrooms available?
Basic restrooms may be available at trailheads, but none along the trail. Pack-out waste options are recommended.
Q5. Is camping allowed?
Yes, dispersed camping is permitted. Follow wilderness guidelines and camp at least 200 feet from water sources.
Q6. Can beginners attempt this trek?
Beginners with good fitness and some backpacking experience can attempt it, but proper preparation and training are essential.
Q7. Are guided tours available?
Yes, outfitters in Wyoming and Colorado offer guided treks, though many hikers choose to go independently.
Q8. Is fishing possible?
Yes, with a Wyoming fishing license. Alpine lakes and rivers are known for trout.
Final Thoughts
The Boulder Lake to Green River Lakes trek is a classic backcountry adventure in the Wyoming Rockies. With its dramatic mountain landscapes, wildlife encounters, and a chance to walk part of the Continental Divide Trail, it offers an unforgettable wilderness experience. Whether you’re a seasoned trekker or an adventurous beginner, preparation is key to enjoying this journey safely and responsibly. Boulder Lake to Green River Lakes .
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