The phrase "avid runner" means someone who really loves and enjoys running.
Sentences with «avid runner»
This stroller design benefits avid runners with great suspension for the little ones and durable wheels. (strollerlab.net)
And for many people, from avid runners to weekend warriors, that means it's almost time to lace up your shoes and dust off those training plans. (sciencedaily.com)
Extra fit, avid runner with a tummy flatter then 90 % of the ladies out there. (crossdresserhookup.com)