Your Ragnar Game Plan, Powered by COROS

COROS is proud to partner with Ragnar for Ragnar Trail Rainier. Trail relays are a rare and unique corner of the running world, and we're excited to be part of it. Whether you're a trail veteran or running your first relay, we'll be on-site during the race weekend to help your team get the most out of your watch...

Read more at Coros.com