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Welcome to Outsider Endurance

2023 Race Schedule Coming Soon

Who We Are

Outsider Endurance Triathlons

Outsider Endurance is an athlete-first multisport event production company, founded by Jeff & Kristin Smith. Our focus is to provide a series of multi-sport and adventure races that prove to be safe, challenging and rewarding. Outsider Endurance was founded to promote a year-round lifestyle obsessed with all things outside. Please sign up below to be the first to know about our 2023 events. All 2023 races will take place in Massachusetts. 

Jeff Smith is a USAT Certified Race Director and dedicated endurance athlete. Jeff and Kristin have developed a love for an outdoor lifestyle, focused on functional training to support the activities they pursue. Their combination of continual training and event coordination made starting a multi-sport racing company a natural fit. They are excited to be a part of your fitness goals and hope they can provide the same support that so many in the local endurance community have shown them.


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Sign up to receive the first word when we announce our 2023 races.

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