Fantastic little gem. Owner was super responsive and very polite. Facility was brand new and immaculate, with every piece of equipment you could need. Tim was super knowledgable and very engaged the entire time. I was very pleasantly surprised by my time there. I would recommend it to anyone in the area.

Everybody made me feel very welcome. The coaches are very knowledgeable and are great motivators. I would highly recommend checking it out. It’s a great environment and a fantastic place with a highly qualified staff!! Thanks for a great workout. Harry Wilkins from Fort Wayne, IN.

Training is difficult when traveling from Texas, especially when I’m not sure if a gym will let me drop in.I loved that their website has a drop in option! On top of that, I train for powerlifting and strongman and they were very accommodating! They have lots of tires, stones, and a couple yokes. I was able to do any free weight exercise I needed to keep getting stronger.This will for sure be my gym when I’m visiting family (and will be my gym if I ever move back).

Great gym and equipment. Coaches are great and friendly. Love that there are several options of classes too. Great environment.

Professional coaching staff with great community atmosphere.

Great work out space! Tons of equipment! Great coaches!!

TVC is great! Love being able to pop in for the holidays when I come back home. Very accommodating, friendly staff and members. Will definitely continue to come back. Thanks for being so great!

HIGHLY recommend this gym! I was traveling through JC and wanted a workout. Immediately greeted by the coach, felt like part of the group during the workout, and facilities and workout were great. Definitely planning to go back next time I’m in town.

I highly recommend this gym! When I dropped in I was immediately greeted by an excited coach and the facilities were top notch. Even though I was new, the other athletes in the class made me feel apart of their community. I had an absolute blast and will be going back.

Great gym for people serious about their health!

I dropped in for open gym and they had everything I needed! Everyone was very friendly!

Did a drop in, I’m from out of town, and the owner and members were great. Amazing coaches, and a great community vibe!

I had a great experience at TVCF this morning! I contacted their box about being able to do my weightlifting programming there while visiting from out of town. They were quick to reply and very welcoming. I was surprised to see what a great setup they have for weightlifting -- platform, kilo plates, jerk boxes, blocks, etc. They even took out a 15kg bar ahead of my arrival and set it in the weightlifting area so that it would be ready for me. Very impressed!

Awesome box, welcoming people and up to date equipment......oh and the music was pretty awesome as well 👍

One of the friendliest CrossFit gyms I’ve ever been to. Programming was excellent and thorough, coaches were attentive to athletes and athletes were competitive at all skill levels. Great experience and a great gym.

We are in town on from Colorado. Dropped in for a workout. The other athletes were super friendly. Heath coached a great class and was very knowledgeable/helpful. Brad, owner, was very welcoming and appreciative. Love the setup of the gym. Great workout! We absolutely love working out with great people. We WILL stop in if ever in the area. Thanks for making us feel welcome!

Dropped in to Thunder Valley while on a trip to the area. Great facility and super friendly coaches and athletes throughout. Great experience! Thanks Brad and Eric, will be back for sure!

They are a very welcoming staff and owner! Facility was enormous so I didn’t feel cramped while they allowed me to do my own programming. I also did a class that was well organized, efficient, and focused with a great coach helping everyone out. The members that I talked to were kind and hospitable all the way up to the moment I left. Will definitely be visiting again when I come back through!

I’m training for my first spartan race and decided to stop by Thunder Valley with some friends and try it out. It was a great workout and a lot of fun. Great, friendly people! Very helpful and knowledgeable coaching! Definitely will go back

Great box! Friendly and welcoming environment! Great competition and encouragement throughout! Just here for a couple days but I will be back for sure!

My wife and I dropped in to Thunder Valley Crossfit this morning for the 6:30 class while passing through Johnson City on a road trip. It was definitely one of the best boxes weve trained at on this trip.The facility is awesome, the other athletes were very friendly and Brad, the coach/owner was super welcoming, super professional and super encouraging.Would highly recommend if youre passing through town and need a place to train, if youve just moved to JC and are looking for a box, or indeed if you live here and are thinking of starting Crossfit for the first time.

Thunder Valley Crossfit was a great experience. They made me feel as if I was a member. One of the best Crossfit boxes I have been to. Great programming and great coaches. More importantly great people. I will be returning the next time I am in town.

Thanks for a great drop-in experience! The staff and member were very friendly and I had a great time! 12 days of Christmas was brutal, though I enjoyed it through day 10 or 11. :) Thanks again and Ill definitely work out here whenever Im back in town visiting my family.

I visited Thunder Valley with my daughter when I came to see her. It was fun. Coach Chris was very attentive and had some great suggestions for me. Everybody was so friendly. I really enjoyed it.

Had a great workout while visiting for work. the coaches and members were very friendly and great to workout with. I go to a lot of gyms around the country and this was one of the better ones, I even got to shoot hoops after the workout.

This is a great box. I am from the Chicago area, but I did a few drop ins here while visiting. I have been crossfitting for about 4 years now and I have been to many gyms, and this is one of the best Ive seen. The programming is great - plenty of mobility, strength, skill work, and conditioning. And the people are extremely friendly and welcoming. If you are in Johnson city, you must check this box out!

Such a welcoming and supportive crossfit box! I dropped in while visiting from out of town to complete one of the 2016 open workouts. Brad was great at responding to my emails leading up to the visit and everyone introduced themselves and cheered for me during the workout. I will definitely go back when Im in town!

I was in town for the weekend and wanted to get a workout in. I called and they invited me over to join them. It was a great workout and the people were awesome. By the end of the Wod it felt like I had know everyone a lot longer than just an hour. Ill definitely be going here every time Im in the area. Highly recommended.

Thunder Valley Crossfit is great! I dropped-in today and Brad (owner & coach) and the athletes were welcoming and friendly. Great facility with all the equipment needed and top-notch coaching. Ive dropped in on boxes in other countries and cities and TVC is as good as the best, Thanks, Brad.

Just dropped in at Crossfit Thunder Valley this past week and thoroughly enjoyed myself. Brad is a very attentive coach with a lot of positive energy and creative programming. I will definitely visit again the next time Im in the area.

Dropped in while I was in Johnson City for the weekend. Owner was extremely nice and kind enough to let me work on some Weightlifting on my own in the back. Seemed like a really fun group working out while I was there and I really hope Im able to make it back soon!

Awesome box! Dropped in visiting from Denver, Co and all the coaches were great and made me feel like part of the family. Cant wait to visit again on my next trip to Johnson city. Thanks

I dropped in while in town for a couple days and had a great experience. Really cool gym layout with helpful and friendly coaches.

I was visiting from out of town, and needed to get a workout in. I am so thankful I chose TVCF. The experience was absolutely amazing! The programming was great, and the people were even better! Even have Open gym hours to accommodate personal training programs someone may have while traveling. I will definitely continue to drop in when I am in the Johnson City area!

Great box! I really like the layout of the box and everyone was super welcoming. The Saturday class was well ran and had a competitive group of athletes.

Big thank you to Brad for an awesome drop in class while we were on holiday. Great facility, everyone was super welcoming and Brad gave me some great coaching tips/assistance. Definitely recommend to anyone looking for somewhere to work out.

This is a well run friendly gym... i was only able to make it in one day but they made me feel at home. Great workout as well. Thanks!

Great gym and Brad is always an engaging coach who cares about his members and visitors!

I just dropped in for a workout yesterday, and was blown away by how friendly and welcoming the coaches and athletes were. Ill definitely be going back by next time Im in the area. Really cool box with great people.

Dropped in for a WOD while in town for business (1/17). The whole group was welcoming and the coach, Brad, was helpful and professional. Definitely was treated as if I was at my home box. The facility is awesome and loved seeing the different age groups and abilities mixing and accommodating each other. I definitely recommend this box for either a skilled practiced Crossfitter or for the individual looking to learn about Crossfit. Saw Brad make adjustments as well as scale movements for all levels of athletes, personable and professional. Can’t wait to stop back in!

We were visiting from out of state, dropped in and had a great workout. Everyone was friendly and welcoming . We will definitely come back

Drop in. Didnt charge a drop in fee. Great gym. Large. Strong coaching. Strong members. Definitely recommend.

Awesome gym. Even though I was dropping in and newer to CrossFit, they coached and encouraged me like I was one of their members. Everyone was very welcoming. I look forward to my next work trip to Johnson City so I can workout here again.

I go to Thunder Valley crossfit when I am visiting family in Johnson City. The coaches and members are very welcoming and encouraging. Their new facility is spacious with several work out areas.

As a road warrior, I love finding a box like this! (Box is what we call Crossfit Gyms) Great programming - thats the easy part! What comes natural and you can tell they care about is the attention to coaching with safety, form and encouragement. The members are great and yes, Dear, I bought the Tshirt and the jacket! If you travel to Johnson City - drop in! If you live in JC, a great place to get your sweat on!

Dropped in today . Great box w good trainers and most important a fun engaging group of people. Fun partner wods. Open air gym in the mountains. Made my day.

Thunder Valley is the greatest X-Fit gym in Johnson City! The folks there are always friendly and make sure to include everyone into the experience. No matter your skill level, age, or abilities they will design a WOD for you. Ive seen them work just as hard with pregnant women, folks with disabilities, and the off-the-couch warriors as they would with professional and seasoned X-Fitters. If youre looking for a gym that has a family feel without the intimidation factor or searching for a place that will push you to your limits, then look no further! Thanks to the staff and members at TVCF for making the experience enjoyable, challenging, and FUN!

I visited Thunder Valley this past Tuesday while in town for work and had a great workout! Chris Rasnake and Josh King were the Coaches -- very knowledgable and welcoming. Very helpful to each member on proper form during their lifts. Friendly members too! Would definitely recommend this Box and look forward to returning next time Im in town.

I dropped in four days in a row last week. I only intended to come for one day during my stay in Johnson City, but kept coming back! I drop in to CrossFit businesses very frequently and Thunder Valley had the most welcoming community I have experienced yet. The workouts were intense and mostly conditioning. They really fill the hour, so be sure youre ready to go when class starts. There were partner workouts and I didnt know a soul there, but both times, someone welcomed me on their team. We did a heavy Oly complex one day as well. The classes are big and the energy is PUMPING. The coaches are knowledgable and everyone is friendly. If youre in Johnson City, definitely stop by and try it out. 6/5 stars!

Awesome box! Nothing but great experiences with the coaches and members in a great atmosphere! Couldnt have asked for a better group to start my crossfit journey with. Whether youre dropping in or looking to join a family, TVCF wont let you down.

I was in town, dropped in to Thunder Valley, staff and members were very welcoming and friendly. Thanks for the hospitality!

The best place for CrossFit in Tri-cities. Whether youre looking for a new gym or just getting started. The programming and the people are the best around!

Great Atmosphere and great people. Really make you feel at home!

Extremely impressed with the fast response to my initial email about dropping in. Great box, everyone was very friendly and welcoming, to the point where I didnt feel like a drop in. I highly recommend for anyone living in the tri cities or visiting!

Absolutely wonderful people! We were visiting from Hamilton Ontario and needed a place to continue our Smolov training. Brad was so friendly, welcoming, and accommodating. The members we met were so kind and great to talk to. This is a very unintimidating gym. Great facilities and lovely people. Theyre also kid friendly! Thanks ThunderValley, we will see you next time we visit! -Kendell & DJ

Great Box!Great MembersClean PlaceCouldnt ask anymore out of a Box

If you are looking for a top notch CrossFit box in JC, you have to check this place out! I dropped in for 2 days and already felt like part of the TVCF family. Great group of coaches and awesome members who welcomed me with open arms. Not to mention, the programming was great and gave me a good push. Cant say enough about this community! Im looking forward to visiting again.

I dropped in here for the week during the fall races at Bristol Motorspeedway. I couldnt have picked a nicer box to WOD in. The community is strong here and the members were all very friendly and welcoming. They even let me watch the U.S. womens indoor volleyball match before the WOD. Next time Im in the area, Ill be back!

Great clean workout center owned by great ppl that will work with u 2 get u results ur looking for no matter what ur starting level is for workouts!

Dropped in for an afternoon class... Plenty of space, class was well run, people were very friendly

Huge box!!! Excellent coaching. I’ll be back.

Ryan, Josh, and team have made an awesome environment!

Very friendly and great facility

Ok