Navigating the Great Loop: Ultimate Planning Guide

Q: Can a sailboat do the Great Loop?

Yes, a sailboat can complete the Great Loop, but the mast must be removed or hinged to clear fixed bridges along the route. Several sailboat designs include tabernacle masts or similar hinging systems specifically to facilitate lowering the mast for inland and intracoastal cruising.

Q: Do I need a passport for the Great Loop?

You need a valid passport for the Great Loop if your chosen route includes Canadian waterways such as the Trent-Severn Waterway or the Rideau Canal. In that case, Canadian customs clearance is required when entering Canada, and U.S. customs clearance is required when you return to the United States.

Q: What is the most challenging part of the Great Loop?

Many cruisers consider the most challenging segments of the Great Loop to be the open-water crossings of Lake Michigan, the Gulf of Mexico if you do not follow the Intracoastal Waterway, and the tidal, high-traffic sections of the New York area waterways, including the East River and Hell Gate. These stretches are particularly demanding due to exposure, strong currents, commercial traffic, and weather, and weather-related delays are the most common cause of schedule disruptions.

The Great Loop is a continuous waterway route that circles the eastern portion of North America, connecting the Atlantic Intracoastal Waterway, the Great Lakes, the inland river systems, and the Gulf of Mexico. Covering roughly 5,000 to 6,000 miles, depending on route choices, the Loop is the ultimate American cruising adventure, and completing it takes serious planning.

What Is the Great Loop?

The Great Loop is a recreational boating route that follows connected waterways forming a rough circle through the eastern United States and a portion of Canada. No single channel bears the name "Great Loop." Instead, the route stitches together existing waterways, canals, rivers, and coastal passages into one continuous circuit.

A typical Great Loop route includes the Atlantic Intracoastal Waterway along the East Coast, a crossing of the Gulf of Mexico or the Okeechobee Waterway through Florida, the Tennessee-Tombigbee Waterway or the Mississippi River heading north, the Great Lakes (typically Lake Michigan), the Trent-Severn Waterway or Erie Canal connecting to the Hudson River, and the Hudson south to New York and back to the Atlantic ICW.

Completing the loop earns boaters membership in the America's Great Loop Cruisers' Association (AGLCA), marked by a coveted "gold burgee."

How Long Does It Take to Complete the Great Loop?

Most cruisers take 12 to 18 months to complete the full circuit, traveling at a leisurely pace with time for sightseeing and weather delays. Some fast-track the trip in 6 to 9 months, while others spread the journey over multiple seasons.

Timing matters. The northern segments (Great Lakes, Erie Canal, Canadian waterways) are only navigable during warmer months, roughly May through October. The southern segments are best during winter, when hurricane season has ended, and northern waterways are frozen or closed.

Choosing the Right Boat for the Loop

The Great Loop's most restrictive physical constraint is vertical clearance. Fixed bridges along the Erie Canal and some ICW sections limit air draft (the height from waterline to the top of the vessel's highest point) to approximately 19 to 21 feet, though some routes offer slightly more.

Trawlers, cabin cruisers, and motoryachts in the 30 to 50-foot range are the most popular Loop boats. Sailboats can complete the Loop if the mast can be unstepped and the air draft reduced below bridge clearances.

Draft should stay under 5 feet for comfortable navigation through shallow ICW sections and river channels. Some segments of the Gulf Intracoastal Waterway and the Trent-Severn Waterway have controlling depths of 5 to 6 feet.

Key Route Segments

Atlantic Intracoastal Waterway

The ICW runs from Norfolk, Virginia, to Key West, Florida, offering protected passage behind the barrier islands. Shoaling is common, and maintaining awareness of channel markers and depth readings is critical. Navigating the ICW requires current charts and local knowledge, especially through areas like the Dismal Swamp Canal, the Georgia marshes, and the narrow cuts of the Carolina coast.

Florida Crossover

Most Loopers cross Florida via the Okeechobee Waterway, a 154-mile route from Stuart on the Atlantic side to Fort Myers on the Gulf. The route traverses the St. Lucie Canal, Lake Okeechobee, and the Caloosahatchee River. Controlling depth is approximately 6 feet, and lock schedules dictate transit timing.

Gulf Coast and the Tenn-Tom

From Florida's Gulf coast, the route follows the Gulf ICW west through the Panhandle to Mobile, Alabama, then turns north up the Tennessee-Tombigbee Waterway (Tenn-Tom). The Tenn-Tom stretches 234 miles with 10 locks, lifting vessels approximately 341 feet from the coastal plain to the Tennessee River.

The Great Lakes

Lake Michigan is the primary Great Loop lake, with Chicago serving as the western anchor and Mackinac Island marking the northern turn. The lake is open, exposed water that demands respect. Conditions can change from calm to 6-foot seas within hours. Proper nautical charts and weather monitoring are essential for Great Lakes crossings.

Erie Canal or Trent-Severn Waterway

The return leg heads east from the Great Lakes. U.S. Loopers typically transit the Erie Canal across New York State, a 338-mile route with 34 locks. Canadian Loopers may choose the Trent-Severn Waterway through Ontario, which includes 44 locks and two marine railways. Both routes connect to the Hudson River or Lake Ontario.

Hudson River to the Atlantic

The Hudson River provides a scenic 150-mile run from Waterford to New York Harbor. Cruising the Hudson and transiting New York Harbor requires awareness of commercial shipping traffic, tidal currents, and security zones.

Navigation and Charts

Carrying current charts for every segment of the Loop is non-negotiable. NOAA charts cover U.S. waters, while Canadian Hydrographic Service (CHS) charts are needed for Ontario waterways. Electronic chart plotters with digital chart subscriptions simplify route planning, but paper charts remain valuable as backup and for overview planning.

Waterway guides published specifically for the ICW, the Great Lakes, and the inland rivers provide mile-by-mile anchorage, fuel, and facility information that chart data alone does not cover.

Lock Procedures

Loopers will transit dozens of locks. Most U.S. Army Corps of Engineers locks on the inland rivers, and the Erie Canal are free. Canadian locks charge fees. Prepare lines (bow, stern, and spring lines) and fenders before entering, follow lockmaster instructions via VHF radio, and never tie off rigidly to lock walls, as water levels change rapidly during filling or draining.

Budgeting for the Loop

Fuel is the largest single expense. At typical trawler consumption rates of 3 to 6 gallons per hour, fuel costs for a full Loop run between $8,000 and $20,000, depending on boat size and speed. Marina fees, provisioning, maintenance, insurance, and Canadian customs add to the total. A reasonable estimate for a one-year Loop ranges from $30,000 to $60,000 or more.

FAQs

Q1. Can a sailboat do the Great Loop?

Yes, but the mast must be removed or hinged to clear fixed bridges. Several sailboat designs feature tabernacle masts specifically for this purpose. A complete guide to sailboat types covers hull and rig configurations suited for inland cruising.

Q2. Do I need a passport for the Great Loop?

A valid passport is required if the route includes Canadian waterways (Trent-Severn or Rideau Canal). Canadian customs clearance is mandatory upon entry, and U.S. customs clearance is required upon return.

Q3. What is the most challenging part of the Great Loop?

Opinions vary, but the open-water crossings of Lake Michigan, the Gulf of Mexico (if not using the ICW), and the tidal sections of the New York area waterways tend to be the most demanding. Weather delays are the most common cause of schedule disruptions.