Mahnomen: Rocky Flats, Demo Loop Trail Ride Overview:

This technical skills mountain biking singletrack ride loop features the full challenges of the Mahnomen Unit of trails starting and ending at the Cuyuna Country State Recreation Area (CCSRA) Miner's Mountain Rally Center. A Minnesota State Park vehicle permit is required to park a car or truck in this area.


Prior to parking within the Miner's Mountain Rally Center stop by the Minnesota Department of Natural Resources Office at 307 3rd Street, Ironton, MN 56455 or call 218-546-5926 to confirm their open office hours.


Once your State Park permit is in hand, simply drive a few blocks north on HWY 30/Irene Avenue in Ironton. The entrance to the Cuyuna Country State Recreation Area will be to your left after you drive past the last stop sign within the city of Ironton. The entrance to the Cuyuna Country State Recreation Area is super close to town, but it's kind of easy to miss the entrance as well.

This ride loop is intended for techincal skill riding experts only. For all other users, please build your technical skill riding abilites within the Miner's Mountain Rally Center Bike Skills Area in the Mahnomen Unit of trails.

On this technical trail mountain biking loop, you'll experience:

  • Demo Trail (Ride over a large rock feature and a wall of crushed bedrock.)
  • Rocky Flats (Ride between boulders that were exploded out of the Cuyuna bedrock in the early days of the Cuyuna Range open pit mining.
  • Depending on your mountain biking speed, this could be a couple of hours, or a full day experience if you want to session the challenges to your heart's content. This trail riding experience would be the entry level to master prior to attempting the Yawkey Unit's Timber Shaft trail.

    This entire singletrack loop is a one-direction, one-way trail.

    WARNING ⚠: Please read the IMBA Responsbile Riding Rules of the Trail prior to riding by clicking


    WARNING ⚠: Please review IMBA Trail Difficulty Rating System prior to riding by clicking here.


    WARNING ⚠: Please read the safety warnings on the Minnesota Department of Natural Resources Cuyuna Country State Recreation Area Trail Map by clicking here.

    Trail map

    Locate Me
    Get Directions

    5.249 km / 3.262 mi

    Total Distance

    154 m / 507 ft

    Total Ascent

    154 m / 507 ft

    Total Descent

    427 m / 1,402 ft

    Highest Point

    Additional Info:

    On-Trail Navigation:

    • For on-trail navigation click "LOCATE ME" on the map (Below) on your smart phone. Location services must be turned on via your web browser and your cell phone coverage must be adequate. Additionally, for GARMIN users please download the GPX file (right hand column on this page) and upload it to your GARMIN device. Then load this route on your GARMIN prior to mountain biking.


    Trail Conditions:

    • For trail conditions visit the MN DNR CCSRA homepage— Keep in mind the Minnesota Department of Natural Resources does not update their trail conditions daily, just when trails are open, or temporarily closed due to conditions or maintenance.



    • To make a donation to the ongoing annual maintenance of the Cuyuna Lakes Mountain Bike Trails, please visit the Cuyuna Lakes Mountain Bike Crew (CREW), a chapter of the International Mountain Bicycling Association's website.



    • To join the Cuyuna Lakes Mountain Bike Crew in their annual trail maintenance please fill out this short form by clicking here.The CREW will get in contact with you. Thank you!


    ​​​​​​​WARNING ⚠: The guidance on this website is for reference only and should not be interpreted as a standard, specification or regulation. Mountain biking and bicycling on gravel or paved roads are inherently risky and failure to abide by the rules and signage of the trail and road may cause serious injury or death.

    Ride type:
    Mountain biking
    Road riding
    Rail Trail
    EPIC Ride
    Difficulty: Expert (Double Black)
    Ride Duration: Various
    Fitness Level: Ultra Fit
    MTB Segment: cross country
    Shared Bike Path - Paved
    Shared Bike Path - Dirt
    On-Road Bike Lane
    Off-Road - Fire Trail
    Off-Road - Rail Trail
    Off-Road - Single Track
    Off-Road - Downhill
    Gravel Road
    Trail Signage: Average
    Mobile Coverage: Limited
    First Aid
    Bike hire
    Bike servicing
    Accessible by bike
    Accessible by car
    Accessible by public transport
    Accessible by shuttle
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