11 a.m. 

Natural Lands Trust invites area residents to kick up their heels at the ChesLen Chase for Open Space on Saturday, Oct. 25. Proceeds from the event, which will begin at 11 a.m. and include a 10K run, a 5K run, and a 1.5-mile run/walk, will benefit ChesLen Preserve, one of the largest private nature preserves in southeastern Pennsylvania. In addition, the trust will plant one native tree on the 1,263-acre preserve for each race participant. To register or get more information, natlands.org/cheslenchase.