Chief Mountain Highway

Officially, this is Montana Highway 17 in the U.S. and Provincial Route 6 in Canada. Unofficially? It's a front-row seat to one of the most dramatic landscape transitions in North America.

The drive begins about 13 miles north of St. Mary, just past Babb, Montana. From there, the road glides northwest for roughly 29–30 miles, brushing the northeastern edge of Glacier National Park, crossing the international border, and continuing into Waterton Lakes National Park.

You could drive it in about an hour.

But nobody ever does.

Because the scenery keeps changing.

One minute you're rolling through open prairie on the Blackfeet Reservation. The next, wetlands ripple with birds and moose tracks. Then suddenly, the Rocky Mountain front rises straight out of the plains like a stone wall.

It feels cinematic — especially for kids watching the mountains "appear" in real time.

For families, crossing an international border can feel intimidating. Chief Mountain's seasonal border crossing makes it refreshingly simple — as long as you plan ahead.

The Chief Mountain Port of Entry typically operates May 15 through September 30, with varying hours depending on the time of season. Every traveler — including kids — needs a valid passport.

Here's the current seasonal breakdown:

• May 15–May 31: 9:00 a.m.–6:00 p.m.
• June 1–September 4: 7:00 a.m.–10:00 p.m.
• September 5–30: 9:00 a.m.–6:00 p.m.

Most locals will tell you the same thing: Have your passports out, snacks packed away, and expectations relaxed. Border wait times vary, especially mid-summer, so building a little cushion into your day goes a long way.

Helpful tip: If you're re-entering the U.S., the CBP ROAM app can speed things up. For Canada, you may need to phone in to report arrival — easy, but good to know in advance.

Chief Mountain Highway is strictly seasonal. Outside the May–September window, it closes at the Belly River Bridge.

And mountain weather? It does whatever it wants.

That's why locals check road conditions and pack layers — even in July.

Best seasonal experiences:

• Late May–June: Lush green prairies, early wildflowers, and baby wildlife sightings.
• July–August: Warm temps, full access, peak wildlife — but also peak crowds. Early mornings and evenings are your friend.
• September: Aspen color, fewer visitors, incredible wildlife activity as animals prep for winter.

If you're traveling with kids, September is a sweet spot — cooler days, quieter pullouts, and fewer "are we there yet?" moments.

You can't miss Chief Mountain. It rises abruptly from the plains, distinct and unmistakable.

But what most guidebooks don't fully explain is why it matters.

Known as Nínaiistáko — "Old Chief" — this mountain is one of the most sacred sites to the Blackfeet Nation. For generations, it has been a place of prayer, vision quests, and spiritual connection. Many refer to it as the "Mother Mountain."

Driving past it isn't just scenic — it's meaningful.

This is one of those moments where slowing down, turning off the music, and telling your kids why a place matters turns a road trip into a lesson in respect and history.

If you want to go deeper, the Museum of the Plains Indians or the Blackfeet Heritage Center in Browning adds important context.

Chief Mountain Highway doubles as a wildlife corridor — and it shows.

We've seen moose standing knee-deep in wetlands, antelope moving across the prairie, and birds of prey circling overhead like they own the place (they do).

Black bears and grizzlies are also present, especially near the mountains.

A few local rules we always follow:

• Early morning and evening = best sightings
• Pull completely off the road before stopping
• Never approach wildlife — especially moose
• Keep snacks sealed inside the car

If you spot a bear? Enjoy the moment — from a distance — and trust us, everyone sleeps better knowing you played it safe.

Cross the border and suddenly you're in Waterton Lakes National Park, Glacier's quieter, equally stunning sibling. Together, they form the Waterton–Glacier International Peace Park, a UNESCO World Heritage Site.

Waterton feels intimate. Walkable. Easy with kids.

Just Inside the Park:

About five kilometers from the border, Belly River Campground offers something rare: peaceful camping just off a major scenic route.

• 24 first-come, first-served sites
• No potable water (bring your own)
• Bear lockers provided
• RVs up to 21 feet

It's not fancy — and that's the point. Nights are quiet, stars feel closer, and mornings start with birds instead of engines.

• Red Rock Canyon Parkway: Easy walks, vibrant rock formations
• Cameron Falls: Short stroll, big payoff
• Boat cruises on Upper Waterton Lake: Scenic, relaxing, educational
• Horseback riding with Alpine Stables: Classic Western memory
• Bike rides to Cameron Lake or Red Rock Canyon
• Visitor Centre programs: Surprisingly engaging for kids

Chief Mountain Highway doesn't shout for attention.

It earns it — mile by mile.

It's the kind of drive where kids ask real questions, parents slow down, and everyone notices the land changing in front of them. And long after the trip ends, it's often this road — not the headline attraction — that families talk about most.

So pack the snacks. Charge the camera. Leave room in the schedule.

This isn't just how you get to Waterton.

It's how the adventure begins.