Founded in 1999 by athletes looking for a better, easier way to manage event registration online, TriReg has been an industry leader
in event management for two decades.
Since its launch, TriReg, part of the athleteReg family of brands, has hosted registration for thousands of events. We offer one of the most robust
systems on the market, backed by shared knowledge and expertise from seasoned competitors and event directors. At athleteReg, we’re programmers, account
managers, and customer support specialists. But we’re also lifelong athletes, event organizers, and racing enthusiasts.
That’s why we’re dedicated to each event’s success: from planning to execution — start line to finish.
In 2021, athleteReg joined Outside Interactive, Inc., the world’s leading creator of active lifestyle content.
The acquisition of athleteReg reaffirms Outside Inc.’s commitment to deliver outdoor enthusiasts around the globe best-in-class content,
services, and experiences. Skiers, cyclists, runners, and triathletes, now have access to an unrivaled breadth of inspiring and
informational content, products, tools, and training resources.
TriReg, a division of Outside Interactive, Inc. is based in Easthampton, Massachusetts.
We have been providing online registration services since 1999. Contact us at (888) 956-9560 or email us at
You can also find us on