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Photo by Jay Mantri on Unsplash
EasyGround

Chasm Lake Trail

Allenspark, Colorado · Larimer County · National Park Service - Rocky Mountain National Park

Chasm Lake Trail is a easy hiking trail near Allenspark in Larimer County, Colorado.. The surface is ground. Managed by National Park Service - Rocky Mountain National Park. Trail data is sourced from OpenStreetMap.

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40.26213, -105.59682
Open in OpenStreetMap
5-Day Forecast

Weather at Chasm Lake Trail

Live forecast for the trailhead. Use it to pack and time your hike.

Avg High51°F
Avg Low32°F
Peak Rain Chance26%
Humidity57%
UV (avg)8
Air Quality86 · Moderate
Today
🌨
Snow
40°/29°
💧 4%🌬 36mph
5:35 AM8:24 PM
Sun
☁️
Overcast
46°/27°
💧 2%🌬 44mph
5:35 AM8:25 PM
Mon
☁️
Overcast
55°/33°
💧 14%🌬 21mph
5:34 AM8:26 PM
Tue
🌦
Light Drizzle
60°/33°
💧 15%🌬 11mph
5:34 AM8:26 PM
Wed
🌧
Rain Showers
56°/37°
💧 26%🌬 8mph
5:33 AM8:27 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

About Chasm Lake Trail

Chasm Lake Trail is a easy hiking trail near Allenspark in Larimer County, Colorado.. The surface is ground. Managed by National Park Service - Rocky Mountain National Park. Trail data is sourced from OpenStreetMap.

⚠ Note from contributors: Trail has been aligned to the Strava Global Heatmap, a highly accurate average of the GPX tracks of the large number of Strava users who have hiked/ran this trail. Do not modify geometry based on imagery or individual GPX tracks.

What “Easy” Means

Gentle terrain, well-marked. Suitable for all ages and fitness levels.

Difficulty is derived from OpenStreetMap’s Swiss Alpine Club (SAC) hiking scale, trail visibility, surface, distance, and elevation gain. Always verify current conditions before heading out.

What to Pack & Wear

Personalised to this trail’s length, elevation, difficulty, and the live forecast.

👔 What to Wear

  • 👕
    Long-sleeve shirt
    Synthetic or merino, sun-protective.
  • 🧥
    Light shell or windbreaker
    Even on warm days, wind can chill (avg wind 36 mph).
  • 👖
    Hiking pants or convertible
    Layer for variable conditions.
  • 🥾
    Trail runners or low boots
    Comfortable, broken in.

🎒 What to Pack

  • 💧
    Water
    Bring at least 1L of water; more in heat.
  • 🍫
    High-energy snacks
    A snack for the trail.
  • 🧴
    Sun protection (UV 8)
    SPF 50+ sunscreen, lip balm w/ SPF, sunglasses, sun hat.
  • 🩹
    First-aid kit
    Blister patches, ibuprofen, tape, antiseptic wipes.
  • 🗺
    Offline map
    Download your route in advance via Gaia, Caltopo, or OSM-based apps.

Recommendations adapt to the current forecast + trail stats. Use them as a starting point — local conditions, your experience, and the time of day you start all matter.

Trail Safety in Colorado

Trail conditions in Colorado change with weather, season, and fire activity. Closures, washouts, and rerouting are common. Before heading out:

  • Check with the land manager for current conditions and closures
  • Tell someone your plan and expected return time
  • Know your turn-around limits — conditions can change fast
  • Carry the 10 essentials: water, food, navigation, first aid, light, fire, shelter, knife, sun protection, extra clothes

Frequently Asked Questions

How hard is Chasm Lake Trail?

Chasm Lake Trail is rated Easy. Suitable for most hikers including families.

Are dogs allowed on Chasm Lake Trail?

No — dogs are not permitted on this trail per OpenStreetMap data.

Can I ride a bike on Chasm Lake Trail?

No — this trail is closed to bicycles.

Are horses allowed on Chasm Lake Trail?

No — this trail is closed to horses.

What is the trail surface on Chasm Lake Trail?

The surface is ground. Natural surface — sturdy footwear recommended; can be muddy after rain.

When is the best time to hike Chasm Lake Trail?

Colorado has trail conditions that vary by season. Spring and fall usually offer the best mix of temperature and trail conditions. Check the 5-day forecast above for current outlook. Always verify trail status (closures, washouts, fire restrictions) with the local land manager before going.

Who manages Chasm Lake Trail?

Chasm Lake Trail is managed by National Park Service - Rocky Mountain National Park. Check the operator’s website for current permits, fees, and restrictions.