Indoor Go-Kart Racing Thornton

Located on Grant Street in Thornton, Colorado, K1 Speed brings indoor electric go-kart racing, arcade games, casual dining, and group events to the northern Denver metropolitan area. Our facility features a multi-level indoor kart track, over 20 arcade games, a Paddock Lounge, and private event spaces for birthday parties and corporate events.

Located near the intersection of I-25 and Northwest Parkway, and right off East 160th Avenue, we are only 20 miles from downtown Denver and Denver International Airport.

Our 18-Turn Multi-Level Indoor Go-Kart Track

K1 Speed Thornton features an exciting 18-turn, multi-level indoor go-kart track that combines sweeping corners, tight hairpins, and elevated racing sections. With so many different types of turns, this circuit rewards drivers who can balance speed with precision.

The opening turns lead into a flowing section before the tight Turn 5 hairpin tests your braking and cornering skills. From there, you’ll navigate sweeping corners and an elevated section around Turns 8 and 9 before tackling another technical sequence at Turns 11 and 12.

The final section brings several more challenging corners, including the tight Turns 15 through 17, before you return to the start/finish straight. Finding a consistent racing line and carrying momentum through each section will help you chase a faster lap time.

Check out our Thornton track layout to familiarize yourself with the circuit before your visit!

K1 Speed Thornton offers indoor electric go-kart racing for adults, teens, and kids. Our Italian-made OTL Superleggero karts for teens and adults can reach speeds of up to 45 mph, while our OTL Junior Karts for younger drivers can reach up to 25 mph.

Unlike gas-powered karts, our electric karts deliver responsive acceleration without tailpipe emissions or exhaust fumes. For a more detailed comparison, read our article about electric karts versus gas karts.

First time visiting? Read our Know Before You Go guide for height requirements, what to wear, and other important information before your race.

The fun doesn’t end at the checkered flag. After your race, head over to our arcade to keep the friendly competition going. We’ve got a dozen fantastic games to play, from the action-packed Jurassic Park, Fast & Furious, and Halo Fireteam Raven to prize redemption games, basketball hoops, and air hockey! We’ve got something for everyone!

Take a break between races at K1 Speed Thornton’s Paddock Lounge, where you can enjoy food and drinks while watching the action on our multi-level track.

Try our BBQ Brisket Grilled Cheese, Mozzarella Nuggets, or Ginormous Pretzel, and choose from a selection of Pepsi beverages, including iced tea and Gatorade.

Browse our full Thornton Paddock Lounge menu!

Make your next event one for the books at K1 Speed Thornton. We are the perfect venue for any private function, from milestone birthday parties for kids, teens, and adults to high-energy bachelor and bachelorette parties. We also specialize in unforgettable corporate events, offering unique team-building activities and holiday parties. Our F1 Room can seat up to 60 guests, making it an ideal event space for meetings or celebrations alike. And you can always buy out our entire facility for exclusive access!

To explore our event packages, check out our Thornton group events and parties page.