Twenty Miles In: Idaho's Winter Backcountry from the Sled
04/06/2026
By: Chad Biggs
Idaho winter has no shortage of ways to get outside, but there’s a particular kind of perspective you can only get when the snow stacks deep enough to lift you above the treeline.
“When you're on 15 feet of snow, all that's below you, and you're just riding on top of it,” says Jim Reames, Senior Vice President and Treasure Valley Market President at First Federal Bank. “The trees, the brush, the obstacles that would stop any other pursuit — they’re all below you.”
That’s the promise of backcountry snowmobiling at its best: a winter route that starts where the familiar ends. Fifteen to 20 miles into the mountains, the landscape opens up. Ridges flatten into wide bowls. Peaks that look distant from town become something you can ride across — but only in the right season.
Where the Sleds Go
Jim rides several areas of southern and central Idaho that flip familiar geography on its head. Trinity Mountain, east of Boise, is a stronghold, while the West Mountain and Brundage backcountry near McCall offer equally deep snow and complex terrain. Landmark, in the high country north of Warm Lake, opens onto terrain that feels genuinely remote.
“You’re 15 to 20 miles back into the wilderness,” he says. “And when spring comes, the snow melts. The tracks are gone. The mountain reclaims itself completely.”
It’s that combination of access and impermanence that hooks riders. You go in, you experience something extraordinary, and then it disappears with the season.
What It Takes
Jim got into snowmobiling four years ago when a group of friends invited him along. He spent that first trip getting stuck repeatedly waist-deep in powder, wrestling a nearly 500-pound machine in full gear. He was instantly hooked.
“It was the biggest workout of my life,” he laughs. “And I couldn’t wait to do it again.”
By August, he’s already training in the gym to be ready for late November. The preparation isn’t optional, this sport demands strength, stamina, and a willingness to learn.
Safety isn’t optional either. Before every ride, Jim’s group runs through a set protocol: avalanche beacons checked (Jim’s threshold is 80% battery or better), newer riders get quizzed on how to use them, and avalanche airbag packs inspected to confirm they’re charged and the handle is accessible. A designated leader and tail rider are assigned. Head counts happen throughout the day.
“You never ride solo,” he says simply. “Not once.”
The ritual extends to something less formal but just as memorable. Jim often cooks steak bites in a muffle pot — a small metal canister that straps to the snowmobile’s muffler and slow-cooks as you ride.
The Ride Itself
Once underway, the backcountry demands a particular kind of attention. Riders don’t talk during runs each person is alone inside their own experience, navigating terrain where losing focus for even a moment can have consequences.
“When you’re fully geared up - avi bag, beacon, heated goggles, sitting on that machine ready to go — the rest of the world ceases to exist,” Jim says. “You have to be completely focused. And that’s the point.”
For six to eight hours, work pressure, family obligations, and everything else simply cannot compete. The mountain doesn’t care about calendars. It doesn’t reward multitasking. It asks for presence — and gives views in return.
The day ends back at the truck, reliving it all: the lines taken, the close calls, the ridgelines that photographs can never fully capture. Some of those conversations have turned into friendships that extend beyond the mountain — birthdays, weddings, and business relationships built on trust earned one ride at a time.
Getting Started
For anyone curious about Idaho’s winter backcountry, Jim’s advice stays practical. Start with a club. Never ride alone. Take an avalanche safety course. Respect the terrain.
He also points new riders toward a community ethic he values — the idea that you can ride hard and still leave the place looking like you were never there.
“This state offers access to some of the most extraordinary winter country in North America,” he says. “You don’t have to look at it from the road.”
By spring, the tracks are gone. The snow softens, the high country sheds its routes, and whatever lines were carved across the slope disappear without a trace.
That impermanence is part of the appeal — a brief season when winter makes a different view of familiar mountains possible, measured in elevation, silence, and wide-open country above the trees.
