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Located in Arvada, Colorado. GTC is the ELITE of martial arts schools and training centers. Grudge Training Center is known for being a world ranked gym producing some of the highest levels of athletes in combative sports. What many don’t know is it’s also a family martial arts school. Walking into the gym you will have a feeling of professionalism met with a possitive atmosphere for all ages and walks of life. So whether you want to be a World Champion, work on your confidence, maybe just want to put yourself in a positive atmosphere, or just wanting to get in shape, Grudge is the place to take what ever type of success you are looking for to the next level.

The front entrance consists of check in desk, a waiting area with couches, our top of the line Grudge Pro Shop carrying all of your martial arts and combative needs. There is also full locker rooms and showers open to all members. 

The Facility consists of a Wifi waiting area on looking the training center, 12,000sq.ft. State of Art training room that includes a regulation 30’ ultimate fighting octagon, 20’ regulation boxing ring, and bag cage, with a variation of 36 heavy bags. Our fitness area includes all the necessities from free weights to TRX’s as well as cardio equipment all sitting upon Astro Turf. We also use Dollamur-Swain Mats covering the entire training area as well as against the walls.

GTC has the highest level of trainers and coaching in the business.

Including, Jake Ramos (Pro Team Boxing Coach), Luke Cadillo (Head Strength and Conditioning Coach, UFC Veteran), Fidel Martinez Sr. (Head Amateur Boxing Coach), Brandon Girtz (Fitness Coach, Current Bellator Fighter), Lt Nelson (Bellator MMA and Glory Kickboxing Fighter), James Flemming(D-1 NCAA 2 Time All American wrestler, 5th in the Nation).

GTC’s head trainer Trevor Wittman has produced 15 World Champions in Boxing, KickBoxing, and MMA throughout his training career. He has also helped host TUF 10 with Rashad Evans and TUF 16 with Shane Carwin. Trevor has trained the whos who of the UFC, Bellator, Strikeforce, WSOF, HBO boxing and many more..