<http://schema.org/description>
"Wondering how long it might take you to run a 5K? Find out how you can estimate your 5K time and get advice on how to improve."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/how-long-will-it-take-me-run-a-5k-2911114>