A charitable road race from Ogunquit to Portland that raises money for the families of Maine military personnel killed in combat is coming to an end because of a dispute between the original organizers. The Run for the Fallen will be held for the fifth and last time on Sunday. Founder John Mixon, a Vietnam veteran, tells The Portland Press Herald, he plans to keep helping families of fallen soldiers, but he’s tired of dealing with small-town politics. He is also involved in a lawsuit around the controversy. Mixon and Robert Winn organized the first run in 2008. But Winn questioned Mixon’s handling of the finances. Mixon denies any wrongdoing. He in turn filed a defamation of character lawsuit against Winn. Winn’s lawyer says the suit is about money.