Question: How long is this canoeing trail in the northeastern United States and Canada that ends in Fort Kent, Maine?
Context: 4,077-acre Long Lake is a 14 mi lake in the town of Long Lake in Hamilton County, New York in the United States; the average width is half a mile.  It is part of the Raquette River, which flows in a straight, northeast-trending valley.  NY 30 crosses at a narrows 4 mi from the south end where the hamlet of Long Lake is located.  There are two public beaches and a state boat launch.  More than half of the shoreline is part of the New York State Forest preserve.  The northern end of the lake is undeveloped.  The lake is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, NY and ends in Fort Kent, ME. Fort Kent Mills is an unincorporated village in Aroostook County, Maine, United States.  The community is located on Maine State Route 11 and the Fish River south of Fort Kent.  Fort Kent Mills has a post office with ZIP code 04744, which opened on April 11, 1906. State Route 11 (SR 11) is a state highway in the U.S. state of Maine.  It is a continuation of New Hampshire Route 11 at its south end in Lebanon, which itself is a continuation of Vermont Route 11.  SR 11 in Maine travels through the counties of York, Cumberland, Androscoggin, Kennebec, Somerset, Waldo, Penobscot, Piscataquis, Aroostook.  The road ends at U.S. Route 1 (US 1) and SR 161 in Fort Kent, near the Canada–US border. The Clair–Fort Kent Bridge is a steel truss bridge crossing the Saint John River between Clair, New Brunswick in Canada and Fort Kent, Maine in the United States. The Fulton Chain of Lakes is a string of eight lakes located in the Adirondack Park in upstate New York, United States.  The chain is the dammed-up Moose River, and the dam which creates the chain holds back nearly 6.8 e9USgal of water.  The lakes are located in Herkimer and Hamilton Counties.  Inlet, Old Forge, and Eagle Bay are towns on them.  The chain begins near Old Forge and ends before it reaches Raquette Lake.  The lakes are named for Robert Fulton, inventor of the steamboat, who proposed connecting the lakes to create an Adirondack canal.  They are suitable for pontoon boats (the most popular type in the area), kayaks, and motorboats.  The chain is part of the 740 mi Northern Forest Canoe Trail, which begins on First Lake and ends in Fort Kent, Maine. The University of Maine at Fort Kent (French: L'Université du Maine à Fort Kent) is a public liberal arts university in the U.S. state of Maine near the Canada–US border with Québec and New Brunswick.  The university is an academic center for Acadian and French American culture and heritage, and French-speaking Mainers from throughout the state. The Northern Forest Canoe Trail (NFCT) is a 740 mi marked canoeing trail in the northeastern United States and Canada, extending from Old Forge in the Adirondacks of New York to Fort Kent, Maine.  Along the way, the trail also passes through the states and provinces of Vermont, Quebec, and New Hampshire.  The trail was opened on June 3, 2006. The Fort Kent - Clair Border Crossing is at the Clair–Fort Kent Bridge that connects the town of Fort Kent, Maine, with Clair, New Brunswick, on the Canada–United States border.  It marks the northern terminus of U.S. Route 1.  This crossing first opened in 1905 with the construction of a footbridge that traversed the Saint John River.  A replacement for the steel bridge that was built in 1930 opened July 31, 2014. Fort Kent is a hamlet in central Alberta, Canada within the Municipal District of Bonnyville No. 87, located on Highway 28 approximately 32 km southwest of Cold Lake.  It is named for Fort Kent, Maine. Fort Kent is a town in Aroostook County, Maine, United States.  The population was 4,097 in the 2010 census.  Fort Kent is home to an Olympic biathlete training center, an annual CAN-AM dogsled race, and the Fort Kent Blockhouse, built in reaction to the Aroostook War and in modern times designated a national historic site.  Principal industries include agriculture (particularly potatoes and forestry) and textiles.  Fort Kent is the northern terminus of U.S. 1 and the ending point of the Northern Forest Canoe Trail.  Fort Kent signed a lease agreement with the Fish River Flying Club on July 8, 2011 to repair, maintain, and operate the local municipal airport, which had been closed since the 1980s.
Answer: 740 mi