The Lake Forest Chamber of Commerce Inaugural 5K. Takes Place in the stunning Lake Forest Sports Park on December 16, 2017. We will have a theme of Elf Yourself! It will be a fun family event for all! Flat Fast Course with Timing Chip. Every participant will receive a holiday shirt & medal. Family Fun - Bring Kids & Pets! Expo full of food & fun for all! Join Us on December 16th!