Personal trainer arrested on suspicion of sex assault of 15-year-old client

Tristan Arfi, 37, of Redwood City
Tristan Arfi, 37, of Redwood City. Photo from social media.

Daily Post Staff Writer

The owner of a Menlo Park boxing gym was arrested today (June 4) on an allegation that he sexually assaulted a 15-year-old client, according to police.

Police mugshot of Tristian Arfi
Police mugshot of Tristian Arfi

Tristian Arfi, 37, of Redwood City, was arrested this afternoon on charges of oral copulation of a minor, lewd acts with a minor and sexual penetration, according to police.

The 15-year-old reported the assault occurred on June 1 at Boxing Theory, 161 Constitution Drive, police said.

Arfi has been a personal trainer for over 17 years, according to his website. He worked as a manager at PerfCoaching LLC and ECoachMe, while living in France.

In 2018, he moved to the Bay Area and began working at Equinox in Palo Alto as a trainer. He left Equinox to start Boxing Theory a few months later, according to his LinkedIn.

Arfi is in jail in lieu of $75,000 bail and is expected to appear in court tomorrow.

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.


    • That’s what I’m wondering: If it was consensual. However because she is a minor, that is considered statutory.

    • Consensual or not, he’s 37 and she is a juvenile that was assaulted while at Boxing Theory Gym which he owns. He’s a predator. Not to mention that he just got engaged less than a month ago…

    • Statutory rape doesn’t mean what you think it means, EM.

      Dude just moves into the area and in less than two years is charged with sex crimes against a minor? He’s a no goodnik.

  1. “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”. The charges are as to a 14-15 year old child; And you are wondering if this was consensual?

    Times up, predators. He’s a dirt bag; her parents entrusted her with him and he took advantage of the situation.

Comments are closed.