Sailing from Lake Michigan to Florida: The Great Loop Route

Yes, it's possible — and it's a classic segment of America's "Great Loop" circumnavigation. But it's a serious voyage: ~1,500 nm, 4–8 weeks, requiring preparation, suitable boat, and experienced crew.

The Route: Chicago to Gulf of Mexico

1. Chicago Sanitary & Ship Canal (Cal-Sag Channel) — 30 km, locks, commercial traffic, no recreational facilities.
2. Des Plaines River → Illinois River — 430 km, 8 locks (Brandon Rd to LaGrange), barge traffic, current 2–4 kt.
3. Mississippi River (Grafton, IL → Cairo, IL) — 300 km, no locks, big river navigation, towboats, debris.
4. Lower Mississippi (Cairo → Gulf) — 1,500 km, massive scale, ocean-going ships, strong current, limited services.

Alternative: Tennessee-Tombigbee Waterway

From Illinois River → Tennessee River → Tenn-Tom Waterway (234 mi, 10 locks) → Mobile Bay → Gulf. Shorter Mississippi exposure; popular with Loopers.

Gulf Crossing to Florida

• Direct (offshore): 500+ nm open Gulf; weather window critical; 3–5 days.
• Coastal hopping: Intracoastal Waterway (ICW) from Mobile → Carrabelle → Tampa Bay → Florida Keys. Protected, services, 2–3 weeks.

Boat Requirements

• Air draft: < 17 ft (fixed bridges on Illinois River, Tenn-Tom, ICW)
• Draft: < 5 ft (9 ft on Mississippi main stem; 7 ft on ICW)
• Range: 300+ nm (fuel sparse on rivers)
• Systems: Reliable engine, generator, watermaker, AIS, radar, VHF, satcom.

Crew & Skills

• Inland river navigation (locks, tows, buoys, current)
• Heavy weather Gulf experience
• Mechanical/electrical troubleshooting
• Medical training (remote)

Timing

Best window: Late April–May or October–November. Avoid: summer (hurricanes, heat, bugs), winter (cold, ice north), spring flood (Mississippi).

Regulatory

• USCG documentation / state registration
• Lock fees (free on federal; some state)
• No special permits for US citizens; foreign flag = cruising permit.

Resources

America's Great Loop Cruisers' Association (AGLCA), Waterway Guide, Quimby's, ActiveCaptain, NOAA charts. Do the Loopers' "Loop 101" seminar.