ST. LOUIS — Looking to run off the frustration from the Cardinals' 3-1 loss in their home opener? Luckily for you, there are options.

The Go! St. Louis Marathon and Family Fitness Weekend is off to the races beginning Friday. The marathon, which runs through Saturday in downtown St. Louis and Forest Park, is the largest competitive fitness event in Missouri.

There will be several events available through the weekend, including a marathon, half-marathon, 5K, Mississippi 7K, children fun run, and others. Most of the events require participants to be at least 14-years-old.

Registration is still open to the public, but only by visiting the expo on either Friday or Saturday. For more information on the events, visit them online.