The Aspen Recreation department is sponsoring weekly Parkruns, at 8am on Saturdays throughout the month of May, at the Aspen Recreation Center. This week's edition takes place on Saturday, May 12. Parkrun is an international movement that encourages communities to sponsor 5k timed runs that are free and open to all for participation. The premise is simple and fits beautifully with Aspen's commitment to a healthy lifestyle: the organizers offer the timing and the route, and runners and volunteers show up to support the effort. Parkrun began in the US in 2012, and since then there have been more than 63,000 runs throughout the US.