The best gravel rides in Custer State Park

Imagine cruising through the Black Hills of South Dakota, where granite spires pierce pine-covered hills and the air is fresh. This gravel biking route, the Hill City – Crazy Horse Memorial loop from Sylvan Lake, offers a dynamic ride on a mix of paved and crushed limestone surfaces. You'll wind through dense forests, cross converted railroad bridges, and eventually catch sight of the monumental Crazy Horse Memorial, still taking shape in the distance.

Starting from Sylvan Lake, this difficult 32.7-mile (52.7 km) loop demands very good fitness, with 2200 feet (670 metres) of elevation gain over an estimated 3 hours and 7 minutes. Parking is available at Sylvan Lake, and it's wise to carry plenty of water for this substantial ride. The best seasons for this adventure are typically spring and fall, when the weather is most agreeable.

This route stands out for its integration of the George S. Mickelson Trail, known for its smooth, gentle grades, which contrasts with the overall demanding nature of the loop. It provides a unique opportunity to experience the Black Hills' natural beauty alongside iconic landmarks like the Crazy Horse Memorial, making it a memorable gravel biking experience in Custer County.

The Custer loop from Custer offers a delightful and easy gravel biking experience, guiding you through the picturesque fringes of the Black Hills. You'll pedal past rolling plains and scattered pine forests, enjoying the fresh air and open spaces that define this part of South Dakota. While not featuring dramatic granite spires, the route provides a pleasant, low-stress ride, perfect for soaking in the natural beauty without intense effort.

This 8.0-mile (12.9 km) route with a gentle 357 feet (109 metres) of elevation gain is designed for a quick 42-minute spin, making it ideal for beginners or those seeking a relaxed outing. Parking is generally easy to find in Custer, and the trail is accessible for most of the year, though checking weather conditions is always wise. It's a great way to get a taste of the Custer State Park gravel bike trails without needing extensive planning.

This particular Custer loop gravel bike route is notable for its accessibility and the opportunity to experience the region's diverse landscapes, from open grasslands to pine-speckled hills. While it doesn't delve deep into Custer State Park's famous wildlife areas, it provides a scenic and enjoyable ride that highlights the general natural features Custer gravel trails are known for, making it a popular choice for a casual ride.

The George S. Mickelson Trail – Hill City loop offers a distinctive gravel biking experience through the Black Hills, immersing you in dense ponderosa pine forests and open prairie vistas. You'll ride on packed crushed limestone and gravel, navigating gentle grades that occasionally give way to more strenuous uphill sections, especially near Mystic. Keep an eye out for the impressive granite walls, historic rock tunnels, and the numerous converted railroad bridges that are a hallmark of this route.

To plan your visit, remember that a trail pass is required for all users aged 12 and older, which can be purchased daily at the Hill City trailhead. While amenities like parking, restrooms, and water are available, be prepared for limited cell phone coverage in some areas. A gravel bike or mountain bike is highly recommended for the varied terrain, and allow around 2 hours and 49 minutes to complete this 28.9-mile (46.4 km) loop with its 2062 feet (628 metres) of elevation gain.

This difficult gravel biking route is a significant rail-to-trail project, following an abandoned Burlington Northern railroad line, which explains its gentle slopes and unique historical features. It's a great way to experience the tranquility of the Black Hills, with opportunities to spot wildlife and enjoy views of the Crazy Horse Memorial, making it one of the more popular routes for those seeking a challenging ride.

The George S. Mickelson Trail – Custer loop from Hill City offers a demanding gravel biking adventure through the heart of the Black Hills. You'll pedal along a consistently well-maintained crushed limestone and gravel path, winding through shaded ponderosa pine forests, crossing historic railroad bridges, and emerging into open meadows. The route provides a fantastic opportunity for wildlife spotting and offers scenic viewpoints, including a distant view of the Crazy Horse Sculpture.

Planning your ride requires a daily or annual trail pass, which is essential for the trail's upkeep. You'll find convenient trailheads with parking, self-sale pass stations, and basic amenities like vault toilets along the 109-mile Mickelson Trail system. Starting early is advisable for this 55.6-mile (89.4 km) loop, especially given its 5 hours and 5 minutes estimated duration and 2863 feet (873 metres) of elevation gain.

This difficult loop is part of South Dakota's first rails-to-trails project, transforming a historic Burlington Northern rail line into a multi-use pathway. Its car-free nature provides a peaceful experience, connecting you to various Black Hills attractions beyond just the trail itself. The route's unique infrastructure, including four rock tunnels, adds to its distinctive character, making it a notable challenge for advanced gravel bikers.