Sparta Area Chamber of Commerce holds Rails to Trails Celebration The new addition also featured a BMX show sponsored by Spartek of Sparta May 1, 2021 6:22 PM Marsalis McGhee Updated: SPARTA, Wis (WKBT) – A local bike expo helps to bring lovers of bicycles and nature together on a beautiful day. The Sparta Area Chamber of Commerce held their annual Rails to Trails Celebration, along with the first ever Bike Expo. The yearly event celebrates the opening of the three tunnels along the trail. With the addition of the Bike Expo, people can visit vendor booths of various bicycle stores from around the area.