A group of hikers have been filmed running for their lives from a charging bear at a national park in nail-biting footage.

Couple Dule Krivdich and Evy Hristov were heading back home after visiting Hidden Lake at Glacier National Park in Montana, US, on Monday when they saw a grizzly bear wandering down a hiking trail.

They noticed a group of hikers walking on the same route and started shouting to warn them of the danger ahead.

Video taken by Dule shows the 500lbs beast coming down through the tree line and suddenly running at speed towards the direction where the hikers are.

A grizzly bear was spotted wandering down a hiking trail where a group of three trekkers were heading to
A grizzly bear was spotted wandering down a hiking trail where a group of three trekkers were heading to

The pair and other witnesses yell: "Hey, dude! Bear! Get off the trail!"

As the bear prances further down the trail, at least three backpackers are seen backing up and starting running uphill.

They split up and go in different directions in a bid to divert the bear's attention.

Evy is heard saying: "They shouldn't run. Don't run!"

The animal eventually walks away and disappears in the meadow.

The group started running uphill when the bear suddenly charged towards them
The group started running uphill when the bear suddenly charged towards them

Dule wrote on Facebook: "This was this afternoon hiking back up after visiting Hidden Lake.

"Just a switchback below where my wife and I just motored through. This big fella, I’d say a 500+ pound Grizzly came through a tree line, ran down a meadow and swiftly on to the trail itself to get to wherever he wanted to go.

"Now hikers just below on the same trail are totally unaware of what’s heading their way as we from above start yelling that there is a bear barreling down the same trail.

"As one yells back 'what do we do?' 'Just start making a lot of noise!!! Don’t run!!!!'

"But just then, the grizzly bear made a bluff charge and we saw people looking at it like we’ve never ever seen before in our lives."

He was glad that no one was injured after the incident and other than that, it was a beautiful day for a hike down to Hidden Lake.