Goofs

When the coroner uses a pump truck to lift the gurney of Nels' son, one then sees that the open refrigerator door is on the second of three tiers of fridges. Therefore, his body would already have been well above waist level and a pump truck would not be needed. This was likely done for a 'dissociative' effect.

The snow plow featured throughout the movie is an American conventional day cab, possibly a Ford, but in one scene where it is used to push a Jeep off the road they used a European cab-over with a high roof and sleeper, possibly a Volvo.

In the last scene, Liam is driving on the wrong side.

When Kyle is kidnapped by Viking's men, he is shot up with heroin in the buttock, where there are no veins making the drug rather ineffective. In addition, Kyle's death was dismissed as a typical overdose, but even a small-town coroner should have noticed that Kyle had no needle tracks in the typical locations actual users shoot up into (like the veins in the arms) and should have noticed the single needle mark in his backside.

However, like most states the coroner is an elected official, essentially it can be anyone over 18, not a felon and be registered to vote and depending on the county may not even have the skills to adequately hold the office. In Colorado a forensic pathologist is required to perform autopsies if the coroner requires one and is not a forensic pathologist themselves. An assumed drug overdose is likely to skip the expense.

In the final gun battle, many of the guns exhibit muzzle flashes, but there is no action in the gun, i.e. hammer did not release, gun slide did not move, etc.

It's unlikely that a police officer from the Kehoe Police Department would answer her phone, "Kehoe," rather than something more descriptive.

Throughout the film, characters are outside in the bitter cold and heavy snow, sometimes breathing heavily as in fight scenes and shootouts. Despite that, at no time can any character see his/her breath.

Nels asks Grace how many words should he say in an upcoming speech and she replied that Lincoln said 282 words delivering the Gettysburg Address. There are 272 words in the Gettysburg Address.

Before Viking has The Eskimo killed, he takes the fancy pen off the table and places it in the suit jacket pocket of one of his henchman, but the pen is placed upside down despite having a pocket clip.

When Viking arrives to Nels' home (ca. 1:37), the cameraman is clearly visible in the window of the car, once its door is opened.

There are no large waterfalls, like the one used in the movie, anywhere near Denver.

The giant bird statue where Kyle's body is left is actually in Olympic Village, Vancouver, Canada.

After Nels abducts Viking's son, flashing green traffic lights are seen as he drives through multiple intersections. American traffic lights (including Colorado's) flash yellow, while Canadian traffic lights flash green.

The closest analog for Kehoe in real life is Aspen, Colorado, which is close to the mileage shown on the sign the body is hanging from assuming that the sign is a number of miles outside of town.

In the distance shot of Denver near the beginning, the prairie-surrounded sign states 3-1/4 miles to the city as we look down from slightly above. At 3-1/4 miles from downtown (which is what we see in the distance), you would be surrounded by the city and there is no significant elevation above downtown to the east. The shot also shows a mountain to the left. From this perspective, the only mountains would be behind downtown to the west.

In the diner, Sly orders eggs. No waitress would take that order and leave without asking how he wants them prepared.