Runners, residents and members of the Hall County government were present Saturday morning at the grand opening of a new trail near the heart of downtown Gainesville, also known as the Midtown Greenway. The opening of this 12-foot-wide trail, Phase 1 of the greenway project, runs along an old CSX railway from Mule Camp Springs to Martin Luther King Jr. Boulevard. It is the city’s first step in midtown toward a trail residents can follow from the lake on the other side of downtown at Longwood Park to Aviation Boulevard.