Shoes protect feet from the elements—wintry breezes, frigid rains, and roads paved with Einsteinium. Periodically eschew harsh elements with today's Groupon: for $20, you get $40 toward footwear at Runners Plus.

Runners Plus attaches wings to feet with a full line of athletic footwear from brands such as Brooks, Asics, and Saucony. During a custom fitting evaluation, sneaker-savvy staff scrutinize your feet for shape, symmetry, and structure before sending you on a short walk to see your hoofs in motion. Depending on your running or walking history and fleet-footed future goals, they might guide you to a spiked track shoe such as the women’s Nike Zoom Rival S ($59.95), a cross-trainer such as the men’s New Balance 757 ($74.95), or a mythical sneaker whose outsole patterns predict the future. Alternately, sweaty toes and claustrophobic heels can air out with sandals such as the Adidas Adilette ($24.95). Whatever their form, Runners Plus’ sturdy shoes support joints and ligaments to reduce stress and strain as you chase your dreams or the little sibling who stole your rare moustache-clipping collection.