
Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail"
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September 2026
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Who is going?
Adults
Age 13 and over
Children
Age 12 and under
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Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
5.0/5
Based on 9 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" worth booking?
Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" is a 2-hour experience in Boulder, United States, from $300 per person. It scores 58 out of 100 on the Outty Ranking, which we label “Worth a Look”, based on a 5/5 rating across 9 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 58 / 100
- Rating
- 5/5 (9)
- Duration
- 2 hours
- From
- $300 per person
****You will receive a message the day prior to your tour to determine the time of hike based upon current weather conditions.***** Embark on a hiking adventure in Boulder, Colorado, led by Ryan & Aylyn, seasoned guides
What you get
About this experience
****You will receive a message the day prior to your tour to determine the time of hike based upon current weather conditions.***** Embark on a hiking adventure in Boulder, Colorado, led by Ryan & Aylyn, seasoned guides and nature enthusiasts. Starting at the iconic NCAR trailhead, prepare to be captivated by the grandeur of the Flatirons standing tall against the Colorado sky. Feel the thrill of conquering rugged terrain, the fresh mountain air invigorating your senses with each step. Traverse through pine-scented forests, wildflower meadows, and rocky outcrops, discovering the diverse flora and fauna that call this region home. Engage in lively discussions and gain a deeper understanding of the delicate balance between preservation and adventure. Please note we will not climb into Mallory Cave as it is not safe or accessible. Picture-perfect photo opportunities await at every turn!
What's included
Included
- Snacks
What you'll see and do
Flatirons
The Flatirons in Boulder, Colorado, are iconic sandstone rock formations that define the city's skyline. These towering, flat-faced rock slabs jut dramatically from the foothills of the Rocky Mountains, offering breathtaking views and challenging hiking opportunities. A magnet for outdoor enthusiasts, the Flatirons provide a range of experiences from leisurely hikes to rigorous climbs. They are not only a natural wonder but also a symbol of Boulder's adventurous spirit, attracting visitors from around the world to explore their beauty and conquer their heights.
120 minutes here
Where it starts and ends
Meeting point
Boulder
The trailhead is uphill from the parking lot and near the entrance to the Center. Ryan & Aylyn will be waiting for you at the TH holding a sign that says Mallory Cave Trail Tour. Summer hikes depart at 9am unless you receive a message otherwise from Ryan or Aylyn.
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
The trailhead is uphill from the parking lot and near the entrance to the Center. Ryan & Aylyn will be waiting for you at the TH holding a sign that says Mallory Cave Trail Tour. Summer hikes depart at 9am unless you receive a message otherwise from Ryan or Aylyn.
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 6 travelers per booking
- Operated by
- Explore Boulder
Know before you go
- Public transportation options are available nearby
- Not recommended for travelers with spinal injuries
- Not recommended for pregnant travelers
- Not recommended for travelers with poor cardiovascular health
- Travelers should have a high level of physical fitness
Photos






What travelers are saying
Outty’s summary of the themes that recur across 9 traveler reviews. Written by us, not quoted from reviewers.
Physical effort
8 mentionsExpect real walking or climbing: reviewers mention the effort involved.
The guide
5 mentionsTravelers single out the guide as the reason the experience works.
Photo opportunities
3 mentionsThe views and photo stops come up again and again.
Knowledge and storytelling
2 mentionsReviewers describe the commentary as informative rather than scripted.
Pace and timing
2 mentionsSeveral reviewers comment on how the schedule is paced.
Traveler reviews
9 verified traveler reviews for Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail". Ratings and reviews provided by Viator and Tripadvisor.
A great tour close to Boulder!
A very nice and pleasant hike a short distance from Boulder, Ryan is a great guide and the trail itself offers amazing views of Boulder and the Flatirons.
via Viator
Very enjoyable hike. ...
Very enjoyable hike. Ryan was a great guide, knowledgeable about the area and pointed us toward many additional trails for these Boulder newcomers.
via Viator
Great hike.
The hike was great. Ryan was an excellent guide and fun to talk with. Highly recommend doing this hike with them.
via Viator
Challenging and beautiful hike
Ryan arrived on time for our hike. It was a beautiful and challenging hike. Great views throughout the hike were the reward. Ryan was conscious of my “hiking” ability and adjusted the hike accordingly. If you are interested in hiking in Boulder , I would highly recommend this tour. You won’t be disappointed and you will feel a sense accomplished after doing such an amazing hike!
via Viator
Beautiful scenery, fun guide!
Easy to coordinate meeting location and time. Fun, knowledgeable guide. Will definitely sign up for future hikes with Aylyn when I visit Boulder in the future.
via Viator
Good to know
- Duration
- 2 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 3
- Verdict
- Worth a Look
Why this scores 58
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail": questions travelers ask
Practical detail on this experience, plus the wider planning questions for Boulder.
How much does Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" cost?
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Prices start at $300 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Boulder usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" take?
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Plan for about 2 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Boulder is not rushed.
Is Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" worth it?
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It holds an Outty Ranking of 58 out of 100, which we label "Worth a Look". That score blends traveler sentiment (5/5 across 9 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Boulder, and how flexible the cancellation terms are.
Can I cancel or reschedule Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail"?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 2-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail"?
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Around 3 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Boulder can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Boulder and add a light layer if any part of the 2-hour experience runs outdoors or after sunset.
Where does Private "Boulder Peaks & Wilderness Tours: Mallory Cave Trail" start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Boulder within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Boulder?
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Boulder pairs Flatirons hiking and climbing with Pearl Street food and brewery walks, e-bike tours along Boulder Creek and Rocky Mountain National Park day trips. On Outty we rank every Boulder experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Discover Rocky Mountain National Park-Small Group Tour & Picnic, Rocky Mountain National Park Guided Small Group Tour, Best of Boulder E-Bike Tour. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Boulder?
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May to October. Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Boulder?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
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