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Guernsey

The best MTB trails in Guernsey

4.8

(13)

245

riders

32

rides

Mountain biking in Guernsey offers diverse terrain across its picturesque landscape. The island features rugged coastal paths, rolling hills, and historical fortifications, providing varied experiences for riders. Its topography includes expansive plains and rocky outcrops, contributing to a range of mountain bike trails. This makes Guernsey a compelling destination for outdoor enthusiasts seeking to explore on two wheels.

Best mountain bike trails in Guernsey

  • The most popular mountain bike trail is St Saviour's Reservoir – Fort Grey loop from Saint Peter Port, a 46.9 miles (75.5 km) moderate route that takes 4 hours 26 minutes to complete. This route features significant elevation gain and passes by notable historical sites.
  • Another top favourite among local mountain bikers is Castle Cornet Jetty – Vale Church and Cemetery loop from St Sampson, an easy 17.1 miles (27.5 km) path. This trail offers coastal views and incorporates historical landmarks.
  • Local mountain bikers also love the Crabby Jack's – Le Trépied Dolmen loop from St Sampson, a 17.1 miles (27.6 km) trail leading through coastal areas and past ancient sites, often completed in about 1 hour 30 minutes.
  • Mountain biking in Guernsey is defined by coastal cliffs, rolling hills, and historical fortifications. The network offers options for different ability levels, from easy paths to more challenging routes.
  • The routes in Guernsey are highly rated by the komoot community with an average score of 5.0 stars from over 10 reviews. More than 180 mountain bikers have used komoot to explore Guernsey's varied terrain.

Last updated: June 29, 2026

5.0

(4)

40

riders

#1.

Fort Grey – Fort Doyle loop from Saint Peter Port

75.5km

04:26

450m

450m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

5.0

(1)

25

riders

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy
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Tips from the Community

Luke
October 29, 2024, Castle Cornet Jetty

Amazing historical place and great tour

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19th Century Fort built as part of the network to protect the island against invasion by the French. Later used by the Germans during the Second World War who installed coastal defence guns and anti-aircraft guns. About a mile offshore you can see the Platte Forgere lighthouse. Entrance is free.

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Trinity House is a charity dedicated to safeguarding shipping and seafarers and maintaining lighthouses. The cottages above Portelet were used to house the lighthouse keepers’ families.

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The families of the lighthouse keepers were able to communicate with them by sending signals from this lookout rock to the Hanois lighthouse. The mast and rigging were erected in 2012 to commemorate the Diamond Jubilee of Queen Elizabeth II.

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An excellent example of German fortress engineering. It was built using the continuous pour method and the walls and ceilings consist of 12ft thick reinforced concrete. There are 7 storeys and the whole thing took just 7 weeks to construct.

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Designed by John Wilson who also designed town market square, St. James and Elizabeth College in St. Peter Port. It has the tallest steeple in Guernsey and is used as a sea mark by sailers.

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Unusually the church is built on a slope so couples getting married here really do walk ‘up’ the aisle! Note the stained glass window with St. Peter wearing a Guernsey!

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Largest structural reminder of the German Occupation. The tunnels cover 7,000 square meters and were constructed by slave labourers who excavated nearly 30,000 cubic meters of rock sometimes using hand tools and their bare hands. The space is somber and cavernous with a haunted eerie feel. Take an extra jumper as it gets cold in the tunnels.

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Frequently Asked Questions

How many mountain bike trails are available in Guernsey?

Guernsey offers a good selection of mountain bike trails, with over 25 routes available for exploration. These trails cater to various skill levels, from easy coastal paths to more challenging routes with significant elevation changes.

What kind of terrain can I expect on Guernsey's mountain bike trails?

Guernsey's mountain bike trails feature diverse terrain, including rugged coastal paths, rolling hills, and expansive plains. You'll encounter varied landscapes, from dramatic cliff-top sections with sea views to routes passing historical fortifications and reservoirs. The island's topography provides a mix of surfaces and gradients.

Are there mountain bike trails suitable for beginners in Guernsey?

Yes, Guernsey has many mountain bike trails suitable for beginners. Out of the available routes, 24 are rated as easy. An excellent option for an accessible ride is the Castle Cornet Jetty – Vale Church and Cemetery loop from St Sampson, which is 17.1 miles (27.5 km) long and offers coastal views.

Are there any challenging mountain bike routes for experienced riders?

While most trails are rated easy, there are moderate options for those seeking more challenge. The St Saviour's Reservoir – Fort Grey loop from Saint Peter Port is a moderate 46.9 miles (75.5 km) route with over 450 meters of elevation gain, providing a more demanding experience.

What natural features or landmarks can I see while mountain biking in Guernsey?

Many mountain bike routes in Guernsey pass by significant natural features and historical landmarks. You might encounter sites like the The Little Chapel, the ancient Le Déhus Dolmen, or the picturesque Baie du Moulin Huet. Coastal routes often offer stunning views of the English Channel and rugged cliffs, particularly around areas like Jerbourg Point.

Are there family-friendly mountain bike trails in Guernsey?

Guernsey offers several family-friendly mountain bike trails, especially those rated as easy. These routes typically feature gentler gradients and less technical terrain, making them enjoyable for riders of varying ages and abilities. The island's network of shared-use off-road paths is often suitable for family outings.

Can I bring my dog on mountain bike trails in Guernsey?

While many outdoor areas in Guernsey are dog-friendly, it's always best to check local signage or specific trail regulations before heading out with your dog on a mountain bike trail. Some areas, particularly nature reserves or private land, may have restrictions or require dogs to be on a lead.

What is the best time of year to go mountain biking in Guernsey?

The best time to go mountain biking in Guernsey is generally during the spring and summer months (April to September) when the weather is milder and drier. This provides more comfortable riding conditions and better trail surfaces. However, the island's relatively mild climate means that mountain biking can be enjoyed year-round, though some trails may be muddier in winter.

Are there mountain bike trails that offer coastal views?

Absolutely. Guernsey is renowned for its stunning coastline, and many mountain bike trails incorporate breathtaking sea views. Routes along the southern coast, for example, offer dramatic vistas over the English Channel. The Chemin des Bohémiens – Jerbourg Point Lighthouse loop from L'Aumone is one such route that provides extensive coastal scenery.

Are there mountain bike trails that are circular loops?

Yes, many of Guernsey's mountain bike trails are designed as circular loops, allowing you to start and finish at the same point. This is convenient for riders who want to explore without needing to arrange transport back to their starting location. An example is the Crabby Jack's – Le Trépied Dolmen loop from St Sampson.

What do other mountain bikers say about the trails in Guernsey?

The mountain bike trails in Guernsey are highly regarded by the komoot community, with an average rating of 5.0 stars from over 10 reviews. More than 180 mountain bikers have used komoot to explore the island, often praising the diverse terrain, scenic coastal paths, and the variety of experiences available for different skill levels.

Are there options for mountain biking near historical sites?

Yes, Guernsey's rich history means many mountain bike routes pass by or near historical sites. You can find trails that lead past ancient dolmens, historical fortifications like Fort Grey, or even the unique The Little Chapel. These routes offer a blend of outdoor activity and cultural exploration.

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