Montrose Kayak and Surf presents free river surfing demo nights at the Montrose Water Sports Park every Wednesday from 6 to 8 p.m. beginning June 19 through Aug. 7. Bring your own gear, such as wetsuit, helmet and personal flotation device if you have it. If you do not have your own gear, some wetsuits are available, first come basis. MKS provides surfboards, PFDs and helmets. Closed toe footwear is mandatory; booties/old lace-up sneakers are fine. Typically for ages 10 and up, participants must know how to swim. Stop by the shop at 18 South Maple Avenue in downtown Montrose for more information, or call 970-249-8730.