Centerburg on route of new Boston Marathon qualifying race starting Sept. 12 in Sunbury

Centerburg on route of new Boston Marathon qualifying race starting Sept. 12 in Sunbury

SUNBURY — Runners, start training now: there’s a new marathon coming to Sunbury on Sept. 12. The Sunbury Marathon debuts later this year as a Boston Marathon-qualifying event, meaning runners can apply for the Boston Marathon after successfully completing this race. John and Valerie Pratt, who moved to the Sunbury area just over a year ago, organized the marathon. “My wife and I had a vision of creating a compelling athletic event that’s an oppo…