Tristan Arfi Biography

Sexually Assaulting Menlo Park Boxing Gym Founder Arrested: Tristan Arfi Biography, Wiki, Age, Family, Net Worth

Tristan Arfi Biography

Tristan Arfi Biography

The founder of a boxing gym in Menlo Park Tristan Arfi was arrested Tuesday after one of his clients, a juvenile girl, told police he sexually assaulted her at the gym over the weekend, police said.

Tristan Arfi, 37, personal trainer and founder of Boxing Theory gym, was booked on suspicion of oral copulation with a person under 16 years old, lewd and lascivious acts with a 14 or 15-year-old child, and sexual penetration of a person under 16-years old, according to the Menlo Park Police Department.

The victim told investigators that Arfi, her personal trainer, sexually assaulted her on Saturday while at the boxing gym, located at 161 Constitution Drive, near the Bayfront Expressway in Menlo Park.

 Detectives are Pursuing an Investigation

According to the Mercury News, Arfi was booked on felony charges of oral copulation, having sex with a girl under the age of 16, and lewd acts with a child. Menlo Park Police Department is still investigating the allegation.

Tristan Arfi Biography

Police told the San Fransisco Chronicle they believe there may be more unidentified victims. Arfi is being held on $75,000 bail. His first court appearance is scheduled for 1:30 p.m. Wednesday, June 6, 2019.


Police ask if anyone else has had similar contacts with Arfi or has more information about this case to contact Sgt. Ed Soares at (650) 330-6360, Detective Joshua Russell at (650) 330-6819 or the anonymous tip line at (360) 330-6395.

Arfi Has Been a Personal Trainer for 17 Years

According to his website, Arfi is a former athlete, having competed for the French National Rowing Team for several years.

Tristan Arfi Biography

Arfi went to college in France for a Bachelors Degree in Sports and Sciences, where he swam for the university swimming team. He specialized in physical training and became one of the first personal trainers in Nice, France. He later moved to Paris, where he earned a Masters Degree in Strength & Conditioning.


While in Paris, Arfi participated in different TV shows and wrote articles for newspapers, magazines, and websites that specialized in Health and Fitness. He also had a daily TV Show during that time, according to VoyageMIA.

After Paris, Arfi moved to Miami, where he worked as a private trainer for seven years. Finally, after Miami, he moved to the Bay Area. Arfi started by working as a trainer at Equinox Palo Alto but eventually quit to open Boxing Theory and Bayfront iron Gym. In total, he has been a trainer for 17 years.

Arfi’s Clients Have Given Him Stellar Reviews

Arfi is a five-star trainer, as a result of some very nice client reviews online from the past four years

“I’ve been doing one-on-one personal training for the past 8 years, and I’ve gone through countless trainers, most of them terrible,” Amy from San Fransisco wrote on Yelp. “So naturally, I had my reservations when my friend introduced me to Tristan. My how quickly those negative thoughts vanished, and I’m NOT an easy person to impress.”

Tristan Arfi Biography

“Ladies, don’t worry about becoming bulky with weights,” Jennifer from Irvine wrote. “He will help you create a sculpted lean body. He understands that fine balance of feminine and strength. I have seen the positive changes in my own body and I love it.”

“Best trainer I’ve ever had,” Megan from Miami Beach said. “Most trainers just have a certification but Tristan has a Masters and his knowledge of strength training and how it applies to develop an amazing body is impeccable. My body has never looked so insanely hot.”

“Tristan is my boxing trainer, and I’ve never had so much fun at the gym!” Jeremy from San Fransisco said. “I usually dread my workouts, but with Tristan, I now look forward to them. He pushes me, yet he’s sensitive to my limits. He’s helped me achieve things I didn’t know I could do.”