Estes Park, CO

Guided Hike – Advanced | Tundra Tours

alpine lakeSummit Fever 2.0

Getting to the top of a mountain peak is like nothing else.  There’s a huge sense of accomplishment that you may have never known existed and there’s just something about making it to the top that makes you want to summit your next peak as soon as possible; even though you were just breathing hard and your legs were so tired.  Let our guides lead you to the top of a peak and help you make your dreams a reality.

This is considered a “3/4 day” hike. This hike will be approximately 8 hours round-trip, (time estimate includes check-in, driving to/from trailhead, breaks, and approximately 5 hours of actual hiking).  We will hike approximately 6 – 12 miles round trip.

Requirements: This hike is for those who are active and comfortable at altitude and not experiencing any altitude sickness such as headaches or lethargy. You must be comfortable hiking in various terrains, such as in dry, wet, and/or or snowy trail conditions and are injury free.

Tour Details

Transportation is provided for up to 4 people.  For groups larger than 4, your group will need to carpool and follow us into RMNP in your own vehicle.  Please ensure you have at least a half tank of gas. This hike is for those who are active and comfortable at altitude and not experiencing any altitude sickness such as headaches or lethargy. You must be comfortable hiking in various terrains, such as in dry, wet, and/or or snowy trail conditions and are injury free.

Hiker Skill Level: Intermediate / Advanced  | Looking for a family friendly hike?  Click here

Duration:  8 hours

Group Size: Up to 9 adults | Ages 12 and up

Price $ 249 per person | $199 per person for 2 or more


Check Availability & Book This Tour

What’s included
  • Rocky Mountain National Park timed entry included.
  • Wilderness First Aid/CPR certified guide.
  • Trekking Poles
  • Binoculars and / or spotting scope
  • Transportation to and from your location
  • Snacks
What’s not included
  • Rocky Mountain Park Pass
  • Gratuity

Additional information

Check-in Details
Please arrive 10–15 minutes early to sign waivers, use the restroom, and review the tour plan.
Weather impacts every outdoor activity, especially in the mountains. Your safety is our top priority. Our guides are trained to assess weather conditions—forecasted, upcoming, or current—and will make the call to cancel or reschedule if conditions are unsafe. Rapid weather changes are common in RMNP, and we rely on experience, park alerts, and real-time data to make the safest decisions for your group. We appreciate your flexibility and trust as we prioritize your well-being.
What to bring
  • Daypack
  • Water bladder or 32 oz water bottle min – electrolytes optional
  • Comfortable hiking shoes (no sandals, crocs, cowboy boots, etc.)
  • Comfortable hiking socks
  • Comfortable shorts and/or pants to hike in (jeans not recommended)
  • T-shirt (preferably wicking)
  • Mid-layer (long-sleeve)
  • Warmer sweatshirt or jacket
  • Sunscreen, sunglasses, hat
  • Snacks
  • Gloves (lightweight)
  • Camera/phone
  • Headlamp (Night hike only.  Please make sure batteries are charged or in working order)
  • Rain Jacket
  • Rain Pants (optional)
  • Beanie (optional)
  • A legal parent or guardian must accompany anyone under 18 years old.

Cancellation Policy

Customers will receive a full refund or credit with 24 hours notice of cancellation. Tours run rain, shine, snow, or sleet. If weather concerns arise, call at least 24 hours in advance to reschedule. Less than 24 hours’ notice will result in a reschedule or gift card.


About Tundra Tours

“Explored by Locals, Guided by Locals” is the motto for how Tundra Tours Owner/Guide, Cheryl Sarnwick, provides the most professional, educational, awe-inspiring, and safest hiking trips in the Estes Valley; the heart of the Rocky Mountains.  In 19 years, Cheryl has explored the mountain tops and mountain lakes that graph the land here and brings a well-diverse background to cater the needs for your group.

Originally from Crystal Lake, IL, Cheryl grew up playing every sport she could.  From baseball, soccer, basketball, and even tennis, Cheryl went on to play Division I soccer as a goalkeeper at Illinois State University and studied Recreation & Parks Administration.  She completed her final internship at the YMCA of the Rockies in Estes Park, CO ,where she fell in love with the mountains.  All of her experiences; teaching Outdoor Education, coaching, servicing as a Recreation Supervisor, cumulated into what is now her own guiding business.

Professional Guides

All of our guides are CPR + First Aid certified.


Tundra Tours operates with authority from the United States Department of the Interior as well as U.S. National Park Service, State of Colorado and the Town of Estes Park.