Eating, Hiking, Hidden Gems in Blacksburg Area?

Will have one full day here with lots of time except for college tour and informational session mid-July, with my two teen daughters.  We have 2-night condo rental downtown, so we don't have to eat out, but would for the right place (cheap to moderate).  We have car.  

Weather permitting, I would love to get out into nature on a trail, though we won't have hiking boots with us.  Suggestions?  

Thanks!

Blacksburg (Virginia)   Virginia (VA)