The Collegiate East is the traditional 76-mile route of the Colorado Trail through the eastern side of the Collegiate Peaks Wilderness. This well-maintained, heavily traveled route is the gentler alternative to the more rugged Collegiate West, a good match for backpackers who want high-altitude hiking without extreme exposure. The trail winds through pine and aspen forests, crosses wildflower meadows, and follows rolling ridgelines with near-constant views of eight 14,000-foot peaks.
With mostly below-treeline terrain and moderate grades, the Collegiate East works well for altitude acclimatization if you are new to Colorado's high country. Clear trail markings, numerous water sources, and easy resupply access make the logistics simple, whether this is your first Colorado backpacking trip or you just want a less technical alternative to the West route. Most parties take 5-7 days, though strong hikers finish faster.
No permits or reservations are required for backpacking the Collegiate Peaks Wilderness. The U.S. Forest Service encourages voluntary registration at trailheads for safety and data collection purposes.
Critical regulations (Forest Order 02-12-00-24-18, effective through December 2027):
State Wildlife Area Pass: If you hike through the west end of Clear Creek Reservoir on Segment 12, you need a State Wildlife Area Pass or you risk a $100 fine. Most backpackers don't camp here.
For current regulations and closures, check the Pike-San Isabel National Forests alerts page.
Prime season: Mid-July through early September
The Collegiate East typically becomes hikeable in mid-June, melting out 2-3 weeks earlier than the West route because of its lower elevations. Snow can still linger on north-facing slopes and at Hope Pass into early July.
Monthly breakdown: - June: Trail mostly clear but expect snow patches on north slopes. Hope Pass may have lingering cornices. Water sources at peak flow. Few crowds. Afternoon thunderstorms begin mid-month - July: Peak wildflower bloom, especially mid-month. Monsoon season brings daily afternoon thunderstorms. All water sources reliable. Trail traffic picks up - August: Most stable weather window. Wildflowers fading but still present at higher elevations. Warmest nighttime temperatures. Busiest month on trail - Early September: Excellent shoulder season choice. Fewer thunderstorms, golden aspens at lower elevations, reduced crowds. Water sources still reliable - Late September-October: Possible snow. Water sources become unreliable. Very cold nights. Trail nearly deserted
For current snow conditions, check the Colorado Trail Foundation snowpack page.
The Collegiate East has abundant water and multiple resupply options, a significant advantage over the West route.
Water sources: Reliable creeks and streams every 3-5 miles through most of the route. The longest waterless stretch is 8 miles north of Monarch Pass on the southern end. All sources require filtration. Late-season hikers (September+) should verify conditions, since some smaller streams may run low.
Resupply towns (north to south):
Twin Lakes (mile 0): Small mountain village with the Twin Lakes General Store, a backpacker-friendly resupply stop. Holds resupply boxes May-October (call ahead). 8% discount on food, 4% on gear. Full selection of fuel canisters, dehydrated meals, and bars, but limited fresh food. The nearest post office is 30 miles away in Buena Vista (allow 5-10 business days).
Buena Vista (accessible via road crossing ~mile 20): Full-service mountain town 15 minutes from the trail. Hitchhiking from the Cottonwood Pass road is reportedly easy. Full grocery stores, outdoor shops, restaurants, lodging, post office.
Mount Princeton Hot Springs (accessible mid-route): Resort with limited supplies and a restaurant. Pricey but convenient for a hot meal and a soak.
Monarch Pass (mile 76): Monarch Mountain at the Crest store at the highway summit. Limited selection but good for emergency supplies. Shuttle service to Salida is available (call ahead).
Salida (15 miles from Monarch Pass): Full services, outdoor shops, post office. Requires a shuttle or hitch.
Lightning and thunderstorms: The most serious hazard. Afternoon thunderstorms develop almost daily July-August, typically rolling in between noon and 2pm. Get off exposed ridges and summits by noon. If you hear thunder, you are in danger even under blue skies; lightning can strike 10+ miles from rainfall. Never shelter under isolated trees. If caught in the open, crouch in a ball-like position with minimal ground contact.
Altitude: The starting elevation is 9,200 feet, and the high point is 11,889 feet. Take time to acclimatize, especially if you are coming from sea level. The Collegiate East's lower elevation profile makes it better for acclimatization than the West route. Altitude sickness shows up as headache, nausea, and fatigue; descend if symptoms worsen.
River crossings: Generally not a concern. Most significant creeks have bridges, including the crossings at Willis Creek and Lake Creek near Hope Pass. Early season (June) brings higher water from snowmelt, but the trail is routed to avoid dangerous fords.
Wildlife: - Black bears: Present throughout the wilderness. A few reports come in each year of bears raiding improperly stored food, but no aggressive encounters or injuries have been reported. Use bear canisters or proper bear hangs (10 feet up, 4 feet from the trunk). Bears have been a problem near some trailheads. - Moose: Common in Pine Creek Valley and willow-filled meadows. Give them room. Moose are more dangerous than bears and will charge if threatened, especially cows with calves. - Elk, deer, bighorn sheep: Common sightings. Keep your distance.
Trail closures: Segment 11 between Twin Lakes and Clear Creek Reservoir was closed in 2024 due to wildfire. Check the Colorado Trail Foundation closures page for current reroutes before departure.
Navigation: The trail is extremely well-marked with signage and CT markers, and navigation is straightforward enough for beginners. Download offline maps, because cell service is nonexistent.
Northern trailheads (most common starting points):
Interlaken Trailhead (most popular): 2.5 hours from Denver. From Buena Vista or Leadville, take US-24 to CO-82 West. Drive 0.8 miles and turn left (south) on CR-25 (dirt road across from a log structure). Follow CR-25 for 0.5 miles to the intersection south of Twin Lakes Dam, turn left, continue 0.1 miles, then turn right on the second dirt road. Follow it 0.3 miles to the Colorado Trail parking on the left.
Road conditions: CR-25 has large dips and rocky sections. Low-clearance vehicles should park at the Twin Lakes Dam lot and walk 0.5 miles to the trailhead. AWD is recommended but not required if you drive carefully.
Clear Creek Trailhead: Also near Twin Lakes, just south of the village. Easier parking for standard vehicles.
Southern trailhead:
Monarch Pass: On US-50 between Gunnison and Poncha Springs at 11,312 feet. Large parking area at the highway summit. No clearance issues.
Nearest airports: - Denver International (DEN): 2.5-3 hours to northern trailheads - Colorado Springs (COS): 2 hours to northern trailheads
Public transportation: From DEN, take the A Line train to Union Station, then Bustang bus service to the Arkansas Valley (stops near Buena Vista). From there, arrange a shuttle or hitch to the trailheads.
Shuttle services: See the Colorado Trail Foundation shuttlers page for current shuttle drivers. Services include: - High Valley Shuttle (Poncha Springs): Primarily serves mountain bikers but may accommodate backpackers - Private shuttle drivers on the CTF volunteer list - Many hikers successfully hitchhike between trailheads and towns
Parking fees: No fees at trailheads, but parking is limited. Arrive early or use the alternate lots on peak season weekends.
Route direction: Most hikers start at Twin Lakes/Interlaken and hike south. This puts the gentler terrain first for altitude acclimatization and saves the bigger alpine scenery for later in the trip when you are stronger.
Camping strategy: Flat tent sites can be hard to find in the heavily forested sections, especially along Foose Creek. Scout for established sites near treeline transitions and creek crossings. Pine Creek Valley and the Three Elks Creek area have abundant camping. Avoid camping in the State Wildlife Area near Clear Creek Reservoir, which requires a separate pass.
Water planning: Carry 2-3 liters between sources. The Colorado Trail Foundation Databook rates water source reliability with symbols (full/half/empty cup). Download the Colorado Trail Hikers app for user-updated water reports that may be only hours old.
Avoiding afternoon storms: Use an alpine start for the high sections. Break camp by 6am, get through exposed terrain by late morning, and reach camp by early afternoon before storms develop. If a storm arrives while you are exposed, stay calm; most pass quickly. Wait it out in a safe position away from ridges and isolated trees.
Wildlife encounters: Make noise in dense vegetation and near streams, and hang food away from camp. If you meet a moose, back away slowly. They are surprisingly aggressive.
Hidden highlights: - The Alpine Tunnel historic railroad site has interpretive signs about the 1882 narrow-gauge tunnel at 11,523 feet - Pine Creek Valley in early morning often has moose browsing in the willow meadows - Lake Ann basin is less crowded than Hope Pass but equally scenic
Gear notes: - Bring warm layers even in August; nights at 10,000+ feet drop to freezing - Trekking poles help on the long downhills and creek crossings - Gaiters are useful for morning dew on overgrown sections - Rain gear is essential for afternoon thunderstorms
Connect with the West: Many backpackers hike the full 160-mile Collegiate Loop by combining the East and West routes. The East is better for acclimatization, so clockwise (East first, West second) is the preferred direction for the full loop.
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