Mountains to Sea Trail

The Mountains to Sea Trail is generally rated as moderate for touring bicycles. It covers a distance of approximately 37.6 kilometers with around 195 meters of elevation gain and descent, making it accessible for most cyclists with some experience.

This route is designed as a loop, starting and ending near the Tustin Metrolink station. It incorporates the scenic Back Bay Loop Trail (Upper Newport Bay Nature Preserve), offering a continuous cycling experience.

The route is predominantly paved, offering a smooth ride suitable for touring bicycles. You'll encounter flat sections along the San Diego Creek Bike Trail and some gentle inclines and declines as you navigate the Upper Newport Bay area.

Cyclists can enjoy several scenic spots. Highlights include the View of Upper Newport Bay Estuary, offering stunning natural vistas, and the View of Newport Harbor from Harbor House, providing a glimpse of the bustling harbor.

Yes, the route utilizes and connects several well-known paths in the area. You'll find yourself on sections of the Back Bay Loop Trail, the San Diego Creek Bike Trail, and the California Mission Trail - stage 03 San Juan Capistrano to Mission San Gabriel Arcangel, among others.

Regulations for dogs can vary within the Upper Newport Bay Nature Preserve and along specific trail sections. Generally, dogs are permitted on leash on paved multi-use trails, but it's always best to check specific signage or the preserve's official website for the most current rules regarding pets.

Southern California enjoys mild weather year-round, making this trail enjoyable in most seasons. Spring and fall offer pleasant temperatures and often clearer skies. Summer can be warm, so consider early morning or late afternoon rides. Winter is generally mild but can bring occasional rain.

Generally, there are no entrance fees or permits required to access the public trails within the Upper Newport Bay Nature Preserve, including the Mountains to Sea Trail. However, specific events or facilities within the preserve might have their own fees.

The route is designed to be accessible from the Tustin Metrolink station, offering public transport access. If driving, various parking areas are available around the Upper Newport Bay Nature Preserve and along the Back Bay Loop Trail. Check local signage for parking restrictions and availability.

As the route passes through urban and natural areas, you'll find opportunities for restrooms and cafes, particularly closer to Newport Beach and residential areas. It's advisable to carry sufficient water and snacks, especially for the more natural sections.

For a comfortable ride, bring plenty of water, sun protection (sunscreen, hat, sunglasses), a helmet, basic bike repair tools, and snacks. A camera is also recommended to capture the scenic views of the estuary and harbor.