Mackinac Island to McGregor: Epic Midwest Road Trip Guide

The journey from Mackinac Island, Michigan to McGregor, Iowa spans over 500 miles, crossing the Mackinac Bridge—one of the longest suspension bridges in the Western Hemisphere. This route traces the Mississippi River’s northern edge and passes through Wisconsin’s Driftless Area, a region that escaped glaciation, creating dramatic river valleys and rugged bluffs.

This road trip combines Great Lakes ferry travel, open highways, and scenic byways. Drivers must first take a ferry from Mackinac Island to Mackinaw City. From there, US-2 and US-151 lead southwest. Estimated driving time without stops is 8-9 hours, but plan for a full day with breaks.

From Mackinac Island (no cars allowed!) you’ll continue via ferry to the Lower Peninsula. The route passes through Hiawatha National Forest, where white pine and birch forests give way to Lake Michigan views. At Fayette State Park, explore a restored iron smelting town.

In Wisconsin, the Driftless Area offers dramatic river valleys. Stop at Wyalusing State Park near Prairie du Chien for overlooks of the Mississippi and Wisconsin Rivers. The region is a hidden gem for hiking and birding. For unique local commerce, visit the how to find the best stops and hidden gems between cities guide to discover artisan cheese shops and farm stands.

UNESCO World Heritage Sites

The route does not pass any UNESCO sites directly, but the Effigy Mounds National Monument near McGregor is a National Historic Landmark with Native American burial mounds shaped like animals. It’s a must-see.

The primary highways are MI-185, US-2, US-141, and US-151. From Mackinaw City, take US-2 west along Lake Michigan’s shoreline. At Iron Mountain, merge onto US-141 south toward Green Bay, then US-151 southwest into Iowa. The final leg crosses into Prairie du Chien, WI, then across the Mississippi River to McGregor.

• Ferry: Star Line or Shepler’s operate year-round from Mackinac Island. Cost approx $25 per person.
• Tolls: Only the Mackinac Bridge ($4.00 for cars) if returning via bridge; otherwise none.
• Fuel: Gas stations are frequent along US-2 and US-151. In remote stretches (Hiawatha National Forest), fill up when below half tank.
• EV Charging: Limited. Plan stops in Escanaba, Green Bay, or Dubuque.

Best time to drive: May-October for weather and attractions. Winter driving requires snow tires and caution. Curve alerts appear on US-151 near the Mississippi.

Roads: US-2 and US-151 are well-paved but can be narrow in sections. Watch for deer, especially at dawn/dusk. The Mackinac Bridge has high winds; check conditions.

• Family stop: Bay Beach Amusement Park in Green Bay, WI – affordable rides and a wildlife sanctuary.
• Pet-friendly: Petoskey State Park (MI) allows leashed dogs. Many roadside rest areas have pet areas.
• Fatigue management: Stop every 2 hours. Rest areas at 30-mile intervals on US-2. For a longer break, try the city of Escanaba’s waterfront park.

Culinary Infrastructure

Local specialties include pasties (meat pies) in Michigan’s Upper Peninsula, and Wisconsin cheese curds. For a sit-down meal, try the Stone House in Pella, WI, or the Red Geranium in Prairie du Chien.

Hidden Off-Route Spots

Just off US-2, call at the ghost town of Fayette, MI. Or detour to Tahquamenon Falls State Park (30 miles north on M-123) for stunning waterfalls. In Iowa, Pikes Peak State Park offers incredible Mississippi River views a few miles south of McGregor.