MACKAY ATV/UTV FIELD GUIDE
Nine Hours on a New Polaris RZR: Riding the Lost River Valley from Mackay
A full-day, 9-hour Polaris RZR rental from Lost River Adventures that puts you on hundreds of miles of trails through Idaho’s Lost River Valley — this guide explains what to expect and how to plan.
Nine Hours on a New Polaris RZR: Riding the Lost River Valley from Mackay.
Out of Mackay, Lost River Adventures outfits riders with brand-new Polaris RZR UTVs for a full, nine-hour foray into the Lost River Valley — an ATV/UTV heartland threaded with hundreds of miles of scenic trails. The offering is straightforward: a single-day, vehicle-based exploration of Idaho backcountry and the wide-open terrain around Mackay.
Highlights
Outing Highlights
Brand-new Polaris RZR UTVs
Riders take one of Lost River Adventures’ new Polaris RZR UTVs for the day, experiencing the capability and speed of purpose-built off-road machines designed for trail networks in the region.
Hundreds of Miles of Trails
The ride covers the Lost River Valley’s extensive trail network — a landscape that has earned the area a reputation as one of Idaho’s ATV/UTV centers and offers long loops and varied terrain for a day-long outing.
A Full 9-Hour Day
This is a full-day experience: the rental and exploration window spans nine hours, allowing for extended route choices and time on the trail away from town.
What the day feels like
What the day feels like
Expect long runs in a capable UTV, the steady vibration of trail travel beneath you and wide, open views of the Lost River Valley as you move between trailheads and backcountry loops. The structure is simple — a nine-hour rental that gives riders time to push into the valley’s trail network on a Polaris RZR and return after a full day of off-road exploration.
Suitability
Who it's for
Who this rental suits — and who should think twice.
Practical planner
Details to review before reserving
The rental and trail time are provided as a single, nine-hour experience.
The operator provides safety equipment; bring weather-appropriate clothing, food and water for the day.
Drivers must be at least 21 and are required to purchase the operator’s insurance policy ($30/day); waivers must be signed prior to operating the vehicle and links are provided in the confirmation email.
Review cancellation policies before reserving.
Frequently asked questions
Planning Your Outing
How long is the rental period?
The rental is a nine-hour, full-day experience.
Is there a minimum age to operate the UTV?
Yes — the operator must be at least 21 years of age to operate the vehicle.
Is insurance required?
Yes — operators are required to purchase the operator insurance policy, which costs $30 per day.
Are waivers required?
Yes — waivers must be signed prior to operating the vehicles; links to these documents are provided in the confirmation email.
What should I bring for the day?
Bring weather-appropriate clothing, your own food and water; the operator supplies safety equipment.
How extensive is the trail network?
The Lost River Valley offers hundreds of miles of trails to explore within this ATV/UTV region.