Registration for the Humboldt Tri-Kids Triathlon is now open. The annual swim, bike, run event will be held Sunday, June 3 at the Arcata Community Pool.

Kids ages 7 to 18 will swim, bike and run their way to the finish line. All experience levels are welcome. Kids 6 and under are invited to participate in the half-mile fun run. Cost is $5 for the fun run, $20 for triathlon individuals and $36 for relay teams. Early registration closes May 24. After this date, cost is $25 for individuals and $42 per relay team.

Last day to register is May 31 at Adventure’s Edge. Visit www.trikids.com for registration forms and more information.