By Markeshia Ricks If you were hoping to test your mettle in the Air Force Marathon half marathon or 5K, you’re out of luck. Both events have sold out, and the full marathon isn’t far behind, according to race officials. With prices slated to increase from $95 to $105 on June 2, race director Rob Aguiar warns would-be runners to get registered while the getting is good. “We constantly receive phone calls from people who want into our race after we close-out,” Aguiar said in a release. “I always, always warn people to register early.” If you can’t run, but…