Welcome to MacBrownRacing.com. Mac is a professional triathlete racing for the Timex Multisport team and Level 1 USAT certified coach based in San Diego, CA. He competes primarily in 70.3 and Ironman triathlons across the globe. Friends and family can follow Mac throughout the racing season on his website. Pictures, race reports, blog posts and coaching tips will be updated as his season unfolds. Thank you for visiting and feel free to leave comments!