BRECKENRIDGE - The International Mountain Biking Association (IMBA) is coming to Breckenridge this weekend to demonstrate its renowned trail care expertise.Local residents will have the opportunity to rub shoulders with Subaru/IMBA Trail Care Crew members Ryan Schutz and Kristin Butcher over the course of the weekend, which is dedicated to improving local trails. The Summit Fat Tire Society and Ripstoke mountain biking will be co-sponsoring the event."It's important to have an educated local population," Ripstoke spokesman David Nash said. "The sessions aim to teach people how to recognize unsustainable trails and how to build sustainable ones."Weekend activities begin tonight at 7:30 p.m. with a slideshow at Downstairs at Eric's in Breckenridge. The slideshow, which is comprised of photos from around the world, will highlight the work IMBA does to build sustainable trails.Saturday's events will begin at 8 a.m. with an IMBA classroom session at the Breckenridge Recreation Center. Attendees will work on trail building in the afternoon, then attend a field session at the West Ridge Trail.Sunday's activities, which begin at 9 a.m., include morning trail work on the French Gulch Golden Horseshoe project, followed by an afternoon group ride. For more information or to register for the event, contact Nash at (970) 485-2061.