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Pushed to his breaking point, a master welder in a small town at the foot of the Rocky Mountains quietly fortifies a bulldozer with 30 tons of concrete and steel and seeks to destroy those he believes have wronged him.


Paul Solet


Paul Solet
1 nomination. See more awards »





Cast overview, first billed only:
Marvin Heemeyer ... Self (archive footage)
Patrick Brower ... Self - Sky-Hi News Granby 1979 - 2007
Glenn Trainor Jr. ... Self - Grand County Undersheriff 1993 - 2004 (as Glenn Trainor)
Casey Farrell ... Self - Granby Town Board 1979 - 1999
Trisha MacDonald ... Self - Marv's Former Girlfriend
Stuart Spencer ... Self - Thursday Crew Rider
Matt Reed ... Self - Board of Directors - Three Lakes Water
Cody Docheff ... Self - Owner, Mountain Park Concrete (archive footage)
Ben McClelland ... Self - Attorney & Grand County Rodeo Rider
Dick Thompson Dick Thompson ... Self - Former Mayor of Granby, CO. (archive footage)
Ron Thompson Ron Thompson ... Self - Vice President, Sewer District Board (archive footage)
Dick Broady ... Self - Granby Town Board 1995 - 2001
Gus Harris ... Self - Former Granby Mayor, Bus Driver
Larry Thompson ... Self - Thompson & Sons Excavation
Gary Thompson ... Self - Thompson & Sons Excavation


On June 4th, 2004, a sixty-three-ton bulldozer, fortified with steel and concrete, systematically destroyed numerous businesses and homes in the small mountain town of Granby, Colorado. The rampage lasted over two hours and resulted in more than eight million dollars in damage. State and local police were incapable of even slowing the machine. Though it was armed with three high-powered firearms, no one but the driver was killed. His name was Marvin Heemeyer. TREAD explores the polarizing perspectives on this man, his motives, and what drove him to the breaking point. Written by SXSW

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town | reenactment | See All (2) »




Did You Know?


Feature film Leviathan (2014) was inspired by this real life event. See more »

User Reviews

Get all the dirt.....and More!
22 June 2020 | by martell-50059See all my reviews

If you missed this story in the news, here's your chance to catch up. (There's a good reason why you might not have heard the story and this well constructed documentary will explain why at the end.) Using actual audio recordings made by Marv Heemeyer, adds not only dramatic tension, but offers us a glimpse into the mind of the man who decided to even the playing field. Director Paul Solet makes effective use of talking heads interspersed with the audio clips, eventually leading to the climax, foreshadowed in part within the opening frames of the film. He then backs up and gives us a thorough look at the events leading up to the action sequences involving one man, a giant bulldozer and a bewildered small town in Colorado. All in all, a fascinating story well worth your time.

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Release Date:

28 February 2020 (USA) See more »

Also Known As:

Tread See more »


Box Office

Opening Weekend USA:

$10,585, 23 February 2020

Gross USA:


Cumulative Worldwide Gross:

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