Detroit to Port Huron: Ultimate Road Trip Guide

The drive from Detroit to Port Huron along I-94 East and M-25 is exactly 60.4 miles. The Blue Water Bridge, connecting Port Huron to Sarnia, Ontario, is the second-busiest Canada–US border crossing. This route follows the historic St. Clair River, part of the Great Lakes Waterway.

Is it worth driving Detroit to Port Huron? Absolutely. The journey offers freshwater beaches, lighthouses, and maritime history. How long to drive Detroit to Port Huron? Expect 1.5 hours without stops, but plan 4–6 hours to enjoy attractions.

For the best stops Detroit to Port Huron, refer to how to find the best stops and hidden gems between cities.

I-94 is well-maintained; M-25 has occasional sharp curves near water. Speed limits 70 mph on I-94, 55 mph on M-25. Winter driving caution: lake-effect snow reduces visibility.

• Family suitability: The River of Life Christian Center in New Baltimore has a playground. Birch Beach Park (Algonac) offers shallow swimming.
• Pet-friendly framework: Lakeport State Park allows leashed dogs on trails and beaches. Pet-friendly motels: Comfort Inn Port Huron.
• Fatigue management: Rest zones at I-94's Yates Cider Mill and M-25's Marine City park.

Culinary infrastructure: The Rooftop Cafe (St. Clair) for perch sandwiches. Blue Water Pie (Port Huron) for cherry pie. Vegetarian options at The Painted Lady (Marine City).

I-94 East merges into M-25 at exit 243 near Mount Clemens, following the St. Clair River north. Road quality is excellent, with well-lit highways and clear signage. Toll roads are absent.

• Fuel stations every 5–10 miles along the corridor. Prices average $3.50/gal (Michigan state average).
• Rest areas at mile marker 75 (I-94) and near St. Clair (M-25).
• Border crossing: Blue Water Bridge toll $3.75 USD for passenger cars.

Electric vehicle charging: Tesla Superchargers in New Haven and Port Huron. Level 2 chargers available at many motels.

The St. Clair River is a deep, swift channel linking Lake Huron to Lake St. Clair. Anchor Bay offers sandy beaches. Self-guided lighthouse tours: Fort Gratiot Lighthouse (1829) and Port Huron Museum.

Local commerce: The farmers market in St. Clair (Saturdays June–Oct) sells fresh produce and maple syrup. Antique shops in Marine City line M-29.

• Natural attractions: Lakeport State Park (camping, beach).
• Hidden off-route: Algonac State Park, a quiet marshland with birdwatching.
• UNESCO sites: None on route, but nearby: Wright Brothers' Dayton (3 hr drive).

Things to do between Detroit and Port Huron: Visit the Huron Lightship Museum in Port Huron (a floating lighthouse).