YMCA of Boulder Valley Share: NonprofitChildcare/PreschoolCommunity Associations/OrganizationsNonprofit YMCA of Boulder Valley Visit Website Request Info 950 Lashley Street Longmont, CO 80504 303-443-4474 www.ymcabv.org About Map About We are committed to strengthening communities through youth development, healthy living and social responsibility. What's Nearby? Distance: 5 10 15 20 25 50 mi.