20 Things to Do on Koh Samui (From People Who Actually Live Here)
You’ve done your morning training. You’re back at the retreat. You’ve got an afternoon, maybe…
Weight Loss & Fitness Retreat in Koh Samui, Thailand
Lose weight, get stronger, and reset your habits at Lamai Fitness Retreat — a results-driven retreat on Thailand's tropical Koh Samui island. Personal coaching, structured training, and proper nutrition, all in one place. No gimmicks, no fad workouts — just the work that actually changes your body.
Lamai Fitness Retreat, Koh Samui
18 Years Of Proven Results, Fitness Retreat in Koh Samui, Thailand. Weight Loss & Wellness Program
We pride ourselves on being the longest serving Koh Samui Fitness Retreat with returning clients every year looking for the next level in fitness. Non stop care with professional qualified coaches that will personalize your program and mentor you throughout your stay. Situated on the tropical island of Samui known as one of the most beautiful islands in Thailand. Created and managed to have a place to achieve goals, make friends and change lifestyles. Take a break from the stress of a job, bad lifestyle choices or just a run of bad luck. All levels, nationalities and ages are welcome.
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Fitness & Weight Loss Packages
Choose the package that fits your goals and your schedule. From short kickstart stays to month-long transformations, every Lamai Fitness Retreat package includes coached training sessions, accommodation, and a structured plan built around what you actually want to achieve.
Starting at 17,000THB / Wk
Complete Fitness Retreat
Our broadest and most popular package. Unlimited access to every class on the schedule — strength training, functional fitness, Muay Thai, yoga, mobility, breath work, run club, beach workouts, and weekend hikes. Built for fitness fans of every level who want variety, results, and a community to share the journey with.
Starting at 17,000THB / Wk
Muay Thai & Hyrox
A specialty package combining unlimited Muay Thai sessions with Hyrox functional strength training. Twice-daily Muay Thai under UK champion Jordan Watson, and Hyrox conditioning with qualified coach Laura Davey. For anyone wanting to learn striking, build serious endurance, or compete in the world’s fastest-growing combat-fitness hybrid.
Starting at 26,000THB / Wk
Weight Loss Transformation
All-inclusive weight loss for any age and any starting point. Personal mentoring, weekly check-ins, clean meals, supplements, and twice-weekly PT, spa, and massage — all built around sustainable methods rather than crash dieting. Founder Billy has coached on some of the world’s biggest fitness TV shows, and his student Nai dropped 64kg the smart way.
Starting at 35,200THB / Wk
VIP Body Transformation
Our most complete body transformation program. Daily personal training, daily massage and spa, weekly physio, IV recovery drip, 3D body scanning, a Garmin watch on loan, and an online aftercare program. Built for any body composition goal — fat loss, muscle gain, or full recomposition.
Starting at 46,500THB / Wk
VIP Over 50s
A fully personalised retreat for clients over 50. Daily personal training, daily massage and spa, twice-stay physiotherapy, and a program built around mobility, strength, and injury prevention rather than punishment. For anyone who wants to lose weight, get stronger, and move better — with the expert support to do it safely, at any age.
Real Results from Real People
Don't take our word for it — hear from the people who've trained at Lamai Fitness Retreat and walked away lighter, stronger, and with the habits to keep it that way. These are their stories, in their own words.
"The team of coaches especially Pikey and Laura really knew their stuff and took care of us. No matter your fitness level, everyone is there to build a better, stronger version of themselves, and whilst having fun at it!"
"The class schedule was excellent. The coaches and staff truly made the experience though - they are amazing. So friendly, welcoming, and genuinely invested in everyone there. I left feeling like I’d made real friendships, not just attended a retreat."
"My husband and I just finished our 3 weeks at Lamai Fitness and we enthusiastically recommended it for anyone looking to get in shape and feel amazing."
Frequently Asked Questions
Got questions before booking? Here's what most guests want to know. If you don't see your question answered below, get in touch — we'll get back to you within 24 hours.
Contact UsWho is here and why ?
We welcome all walks of life from professionals, digital nomads to people passing through taking time out of their career. Most of our clients come to reset, drop their shoulders and want to learn how to live with a balanced lifestyle. In general everyone here has the same goals who want to change their mindset & body ; its a very supportive place, all ages and working together. All classes are scaled so never be afraid of being out of your depth.
Can I come at any time in the year?
Yes, we are open all year round. February to June being the hotter months, November having more rain and cooler. The only day we close is Christmas Day throughout the year.
Where are you located?
On Koh Samui, in the local village of Lamai Beach, South Thailand.
How do I get to Lamai Fitness Retreat from my home country?
Most international guests fly into Koh Samui via Bangkok (BKK or DMK) or Singapore. Bangkok Airways operates the most direct flights to Koh Samui Airport (USM), which is about 25 minutes from the retreat by taxi. Singapore Airlines and Bangkok Airways also run direct flights from Singapore. Once you land, a taxi from the airport to Lamai costs around 500–700 THB and we’re happy to arrange a transfer if you let us know your arrival time in advance.
If you’d prefer a cheaper option, you can fly into Surat Thani Airport (URT) or Nakhon Si Thammarat Airport (NST) on Thai budget carriers like AirAsia or Nok Air. From there it’s a combined bus and ferry journey of around 3–4 hours to reach the island. Coming from Bangkok by overland route is also possible — overnight train or bus to Surat Thani, then ferry across — but most guests prefer to fly.
We’ll send you a full pre-arrival pack once you book, with detailed transfer instructions, what to pack, visa info, and our WhatsApp number for any last-minute questions on travel day.
How’s the weather and what do I need to bring with me?
A great all round temperature of 28-30 with the rain season generally in November and the hot season April. Light clothes, solid trainers and lots of training vests and shorts.
Do I need a visa to come to Thailand?
Generally all countries have a 30 day arrival and 30 day extension done at the local immigration office. For longer stays it may be worth getting a 3 month tourist visa.
Do you provide accommodation?
Yes, our resort accommodation is included. Its a great place, quiet. modern with very high speed internet and only 2 minutes walk to the main gym.
Is food included?
Yes, for the VIP weight loss & Over 50’s package its all inclusive for 7 days a week.
We focus on healthy and clean meals, which should prepare you for your work outs.
What are the payment terms?
- To secure your spot a deposit of 25% is great.
- The remaining amount can be paid on arrival during your first consultation.
- The deposits are to be paid per bank transfer or WISE.
- We recommend using TransferWise for bank transfers, instant and better rates.
From the Blog
Tips, guides, and stories from life at Lamai Fitness Retreat — covering training, nutrition, recovery, and what it actually takes to get the results you came here for.
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