Routes

Planner

Features

Updates

App

Get the App

Routes

Bike touring routes & trails

Guernsey

Alderney Lighthouse – Gannet Rocks loop from Alderney

Routes

Bike touring routes & trails

Guernsey

Alderney Lighthouse – Gannet Rocks loop from Alderney

Moderate

4.0

(2)

riders

Alderney Lighthouse – Gannet Rocks loop from Alderney

01:12

17.1km

200m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 20, 2026

Waypoints

Start point

Parking

Get Directions

2.28 km

Alderney's Roman Fort (The Nunnery)

Highlight • Historical Site

Of all Alderney's many forts, the Nunnery is the oldest. This is because it dates back to the 4th century and today stands as perhaps the most intact Roman small …

Tip by

4.21 km

Alderney Lighthouse

Highlight • Monument

Alderney Lighthouse, also known as Mannez Lighthouse, is a 32-metre (105-ft) stone tower, built in 1912 by Trinity House. It guides ships away from the treacherous waters of the Alderney …

Tip by

5.35 km

Clonque Causeway is a spectacular 400-metre (1,312-ft) tidal causeway which connects the main island of Alderney to Fort Clonque, a 19th-century sea fort.

The causeway and drawbridge are submerged at high tide, making careful timing essential for access.

Tip by

12.3 km

Fort Tourgis

Highlight • Castle

Fort Tourgis is a 1850s Victorian citadel, originally built to house 346 men and mount 33 guns to protect the Alderney Breakwater.

It was later transformed into Stutzpunkt Türkenburg (Strongpoint …

Tip by

14.2 km

Gannet Rocks

Highlight • Natural Monument

Gannet Rocks, locally known as Les Etacs and Ortac, are two rugged, isolated sea stacks. Together, they host a globally significant breeding colony of Northern Gannets, supporting approximately 8,700 pairs—which equates to over 1% of the entire global population.

Tip by

17.1 km

End point

Parking

Way Types & Surfaces

Way Types

13.5 km

2.00 km

1.12 km

427 m

< 100 m

Surfaces

13.8 km

2.45 km

738 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (80 m)

Lowest point (0 m)

Weather

Sunday 6 September

21°C

17°C

0 %

Additional weather tips

Max wind speed: 28.0 km/h

to get more detailed weather forecasts along your route

Comments

Want to know more?

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

Hard

4.6

Le cap de la Hague — loop from La Hague

02:21h

33.6km

540m

Moderate

4.9

Goury Bike Loop

01:03h

14.4km

270m

Moderate

4.3

Beaches and Hedgerows of La Hague Trail

02:18h

33.9km

370m

Moderate

4.3

From the Bay of Vauville to the Stars Trail

02:38h

38.0km

450m

Moderate

Alderney Full Day Cycle

01:11h

15.5km

190m

Hard

4.6

210

Port Racine – Landemer cliffs loop from Saint-Germain-des-Vaux

03:27h

55.3km

570m

Moderate

4.2

101

Omonville-la-Rogue – Port Goury loop from Auderville

01:18h

20.7km

230m

Hard

4.5

Siouville Beach – Vauville loop from La Hague

02:42h

37.8km

420m

Hard

4.2

Port Racine – Port Goury loop from Éculleville

01:55h

27.6km

460m

Hard

4.8

Port Goury – Ecalgrain Bay loop from Auderville

02:33h

37.0km

670m

Hard

5.0

Port Racine – Omonville-la-Rogue loop from Saint-Germain-des-Vaux

03:28h

49.7km

860m

Moderate

4.0

Port Racine – Omonville-la-Rogue loop from Jobourg

01:28h

22.5km

290m

Alderney Lighthouse – Gannet Rocks loop from Alderney

Alderney's Roman Fort (The Nunnery)

Alderney Lighthouse

Chateau à L’Etoc Fort

Clonque Causeway

Fort Tourgis

Gannet Rocks

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️