Mackinac Island to French Lick: Ultimate Road Trip Guide

The route from Mackinac Island, MI to French Lick, IN spans approximately 400 miles and takes about 6.5 hours of pure driving time—but the real journey lies in the stops along the way. The Mackinac Bridge, a 5-mile suspension bridge connecting Michigan's Upper and Lower Peninsulas, marks the start, while the historic French Lick Springs Hotel anchors the finish.

This drive traverses the heart of the Midwest, crossing the Straits of Mackinac, the forests of northern Michigan, the industrial legacy of Flint, and the rolling hills of southern Indiana. Whether you're wondering is it worth driving Mackinac Island, MI to French Lick, IN, the answer is a resounding yes—especially if you love diverse landscapes and quirky roadside attractions.

Key highways include I-75 S, US-23, I-94 W, US-31 S, and IN-37 S. Below is a quick snapshot of the route economics and timing.

Before you begin, remember that Mackinac Island is car-free. Park your vehicle in Mackinaw City and take the Shepler's Ferry (approx. 20 min, $28 round trip). From the ferry dock, drive south on I-75. The first major milestone is the Mackinac Bridge toll ($4.00).

Fuel stops are plentiful along I-75, but become sparse south of Grayling. Fill up in Mackinaw City or St. Ignace. South of Flint, gas stations become frequent again. For the final leg through Indiana, note that US-31 and IN-37 have fewer services—plan a stop in Bloomington.

• Mackinaw City: Full service stations, $3.50/gal (avg)
• Grayling: Limited options, prices higher (~$3.80/gal)
• Flint: Competitive pricing, many stations
• Indianapolis: Major hub, low prices (~$3.20/gal)
• Bloomington: Last good stop before French Lick

Road quality is excellent on interstates, but watch for construction on US-31 south of South Bend. The final stretch on IN-37 is winding and narrow—drive cautiously at dusk. Learn how to find the best stops and hidden gems between cities to make the most of your journey.

Winter driving on I-75 can be treacherous—check weather alerts. Summer brings heavy traffic near Mackinac Bridge. Always carry an emergency kit including blankets and water. For family breaks, the following rest areas are well-maintained:

• I-75 Rest Area near Gaylord (mile marker 282) – clean, picnic tables
• I-94 Rest Area near Battle Creek – interactive kids' zone
• US-31 Rest Area near Kokomo – pet-friendly walking paths

Fatigue management is crucial. Take a 15-minute break every 2 hours. The Challenge of the St. Ignace to Mackinac ferry crossing is a good break from driving. For pet-friendly stops, the Mackinaw City Dog Park (199 S Huron Ave) is fenced and free. Most hotels along the route accept pets—check policies in advance.

Hidden gems: The Soo Locks in Sault Ste. Marie (a 40-min detour) is a marvel of engineering. Or visit the Cross in the Woods in Indian River—a 55-foot-tall crucifix. For a unique meal, try the smoked fish from Darrow's Fish Market in Mackinaw City.

The drive offers a dramatic shift from boreal forests to farmland. Northern Michigan's Hartwick Pines State Park (near Grayling) protects 9,000 acres of old-growth white pine—a living museum of Michigan's logging era. Hike the 1.25-mile Old Growth Trail to see 150-foot-tall trees.

In Flint, the Flint Farmers' Market (300 E 1st St) is a vibrant hub for local produce, artisanal cheeses, and crafts. Open Tue-Sat, 9am-5pm. Don't miss the Flint Cultural Center, home to the Sloan Museum and Longway Planetarium.

• Hartwick Pines: Interpretive center, picnic areas
• Flint: Apple cider donuts at the market
• Indianapolis: City Market (222 E Market St) for diverse food stalls
• Bloomington: Monroe Lake for scenic detour

Southern Indiana's rolling hills signal arrival in wine country. French Lick's historic West Baden Springs Hotel is a National Historic Landmark with its domed atrium—a relic of the Gilded Age. The town's name derives from a salt lick once used by French traders.