A popular multi-use trail that runs roughly 90 miles from Ellsworth to Pembroke could be extended all the way to the Canadian border, if officials in Calais get their way. The Calais City Council has asked the Maine Department of Transportation to consider using 12 miles of state-owned, unused rail line to connect downtown Calais with the Down East Sunrise Trail. The council voted last week to petition the department to create an advisory group to look at the potential of converting the railroad to a multi-use path and abandon a freight easement for the line. The idea has been tossed around over the years but never came to fruition when the trail was built along the old Calais Branch rail corridor in phases between 2008 to 2016. But city and state officials in Calais are hoping the state will reconsider the project and see extending the eastern terminus past Ayers Junction in Pembroke as a potential economic boost to the area.