Great Western Greenway
Great Western Greenway: Ultimate Guide to Ireland's Scenic Coastal Trail
Embark on the Great Western Greenway, Ireland’s premier off-road walking and cycling trail, as it winds through the breathtaking landscapes of County Mayo. This renowned 42-kilometer route leads you along the scenic Atlantic coastline, with panoramic views of Clew Bay’s shimmering waters and its hundreds of islands, past rolling green hills, tranquil woodlands, and traditional stone-walled fields.
Experience a journey through charming countryside villages like Newport, Mulranny, and Achill Sound, each offering a warm Irish welcome. Birds soar overhead, sea breezes carry the scent of salt and wildflowers, and the ever-changing skies paint the landscape in dramatic hues, promising an unforgettable adventure across rugged rural Ireland.
Route Overview
The Great Western Greenway is a designated point-to-point trail stretching approximately 42 kilometers from Westport to Achill Sound in County Mayo. The route primarily follows the disused Westport–Achill railway line, maintaining a mostly gentle gradient suitable for walkers, cyclists, and families. The standard direction is from Westport (eastern terminus) to Achill Sound (western terminus), but it can be easily walked in the opposite direction or in shorter segments.
Key locations along the Greenway include the towns of Newport and Mulranny, both of which offer accommodation, food, and rest facilities. The trail also passes by coastal salt marshes, woodlands, scenic viewpoints, and several public artworks commemorating the region’s heritage. Hikers can expect mostly gravel, dirt, and paved surfaces in good condition, with the odd muddy patch after heavy rainfall. The total elevation gain is minimal—about 150 meters—making it accessible to most ability levels.
The full route can be completed by a seasoned walker in a single day (6–9 hours), though many opt to spread the journey over two days to allow for stops and exploration. The trail is well-signposted, and waymarking is consistent throughout. Public transport links are available in Westport and Achill Sound, easing logistics for starting or finishing the hike.
Historical Context of the Great Western Greenway
The Great Western Greenway follows the former route of the Westport to Achill railway line, which was first opened in 1894. This railway was instrumental in connecting remote communities in County Mayo, providing vital transport for locals, goods, and produce, and played a significant role in the area’s social and economic development. After nearly seven decades of operation, the last train ran in 1937, and the tracks lay dormant for many years before being transformed into the multi-use trail you see today.
Much of the trail’s charm comes from its preserved railway heritage. Along the route, you can spot remnants of old railway infrastructure, such as stone bridges, viaducts, and station houses, echoing the days when the railway brought life and change to rural Mayo. The Greenway also passes through regions steeped in Irish history, including famine roads and ancient settlements, offering a sense of journeying through the layers of Ireland’s past as you traverse windswept bogs and picturesque coastlines.
Notable highlights
Westport: The picturesque starting (or ending) point of the Greenway, Westport is a vibrant town known for its colorful streets, Georgian architecture, lively pubs, and the majestic backdrop of Croagh Patrick mountain.
Clew Bay Views: Throughout much of the trail, hikers are treated to sweeping vistas over Clew Bay, famous for its 365 islands and shimmering tidal waters—an iconic photo opportunity, especially at sunrise or sunset.
Newport: This charming town is marked by its impressive 19th-century stone railway viaduct that arches over the Black Oak River. Newport is a perfect spot for a break, with its historic streets, cafes, and seafood restaurants.
Mulranny Causeway and Salt Marshes: Cross the scenic causeway into Mulranny, where the trail borders unique salt marshes and offers access to award-winning Blue Flag beaches, as well as rare coastal woodland habitats.
Wildlife and Flora: The Greenway is an excellent place to observe native wildlife. Look for herons, otters, and migratory birds in estuaries, and depending on the season, spot wildflowers and orchids along the verges.
Great Western Greenway Sculpture Trail: Encounter a series of public art installations dotted along the route, each reflecting the cultural and natural heritage of Mayo.
Achill Sound: The trail’s western terminus, Achill Sound, is the gateway to Achill Island. Here you can explore sandy beaches, craggy sea cliffs, and traditional thatched cottages, or continue your adventure into the wild landscapes of Ireland’s largest island.
Challenges to expect
While the Great Western Greenway is generally considered an easy trail due to its relatively gentle gradients and well-maintained surface, hikers should be prepared for some challenges related to Ireland’s famously unpredictable weather. Heavy rain and strong winds are common, especially along exposed coastal sections, making waterproof clothing and sturdy footwear essential. Frequent showers can create slippery patches on unpaved segments, particularly after prolonged rainfall.
Long stretches of the Greenway are quite remote, with limited shelter along the route. Although towns and villages provide facilities, there can be significant distances between services, so it’s important to carry water, snacks, and a basic first aid kit. Navigational issues are rare thanks to extensive waymarking, but fog or low cloud cover can occasionally obscure waypoints in open sections, so checking maps or GPS devices is still recommended. During busy periods, shared use with cyclists may require extra caution, particularly on narrower segments of the trail.
Ireland - Coastal
- Gravel
- Dirt
- Paved
- Hotels
- Hostels
- Lodges
- Campsites
- Family Friendly
- Pet Friendly
- Stroller Accessible
- Restrooms
- Water Sources
- Picnic Areas
- Campsites
Begin your journey from the vibrant town of Westport, heading west along the well-signposted Greenway trail. The route starts with a gentle incline as it leaves the urban area, quickly entering open countryside with recurring coastal views of Clew Bay and its islands. Soon, you’ll pass through Newport, where the impressive stone railway viaduct marks a perfect spot for a short break. Continue onward through farmlands and quiet backroads, transitioning into the lush landscapes around Mulranny, renowned for its salt marshes and beaches. The final segment of the trail takes you across the causeway to Achill Sound, concluding your hike at the gateway to Achill Island. Total distance covered in a day is manageable for regular hikers, and amenities are available in each of the key towns along the way.