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Portnablahy

The best MTB trails around Portnablahy

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Mountain biking around Portnablahy offers diverse terrain within County Donegal, characterized by its rugged natural beauty. The region features a dramatic coastline with quartzite cliffs and salt flats, alongside extensive forest parks like Ards Forest Park. Mountainous areas, including nearby Muckish Mountain, provide challenging ascents and descents for mountain bikers. The landscape is shaped by Atlantic swells and winds, creating a varied environment for off-road cycling.

Best mountain bike trails around Portnablahy

  • The most popular mountain bike trail is Scarplands…

Last updated: June 29, 2026

2

riders

#1.

Scarplands Cycle Trail

37.7km

02:56

480m

480m

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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Moderate

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

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

Easy

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

Moderate

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Popular around Portnablahy

Hiking around Portnablahy

Road Cycling Routes around Portnablahy

Cycling around Portnablahy

Tips from the Community

Alex
September 6, 2023, St Patrick's Purgatory

From here over the Lough you can see St Patrick's Purgatory which is an ancient pilgrimage site that is suggested to have not been interrupted for fifteen hundred years, with it continuing in the present day. Its importance in medieval times is clear due to its present on maps all over Europe as early as the 15th century. It was the only Irish site designated on Martin Behaim's world map of 1492.

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On the Pilgrim's Path, which runs around the edge of the lake, you will find St Brigid's Well.

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Alex
February 2, 2023, St Patrick's Purgatory

From here over the Lough you can see St Patrick's Purgatory which is an ancient pilgrimage site that is suggested to have not been interrupted for fifteen hundred years, with it continuing in the present day. Its importance in medieval times is clear due to its present on maps all over Europe as early as the 15th century. It was the only Irish site designated on Martin Behaim's world map of 1492.

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Alex
February 2, 2023, St Brigid's Well

This sacred well has wonderful views over Lough Derg.

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Alex
January 25, 2023, Meenameen Lough

Meenameen Lough sits in the wonderful Lough Navar Forest. It is peaceful and quiet with plenty of tree cover, providing the perfect spot to take a break and take in this unspoilt landscape.

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Alex
January 25, 2023, Castle Caldwell Forest

Castle Caldwell Forest is a 200-hectare ancient woodland with mixed broad-leaf trees comprising mainly of ash, beech, oak and holly in addition to coniferous lowland forest on the peninsula. Take your time to take in the majestic and rare ancient woodland as you cycle through it.

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Built in the 17th century, Castle Caldwell was part of the Ulster Plantation, a province of Ireland colonised by British settles throughout King James I era. The castle had a number of inhabitants after that and fell into ruin towards the 1800s. Although access to the castle is now forbidden due to its dangerous state of repair, the surrounding park and forest can be explored freely. Keep your eyes peeled for the ruined chapel and overgrown graveyard.

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Alex
January 18, 2023, Tully Castle Ruins

This fortified house is on Tully Point and built for Sir John Hume who occupied the house until 1641 when it was attacked by John Maguire and burned on Christmas Eve with all its inhabitants massacred. After that it was not lived in again. There is a visitors centre in a restored farmhouse that has an interesting exhibition telling a number of stories relating to the castle. To visit the castle be sure to step off the bike as it is on foot only!

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Frequently Asked Questions

What kind of terrain can I expect on mountain bike trails around Portnablahy?

Mountain biking around Portnablahy, located in County Donegal, offers a diverse range of terrain. You'll encounter rugged natural beauty, including dramatic coastlines with quartzite cliffs, salt flats, and extensive forest parks like Ards Forest Park. The region also features mountainous areas, such as nearby Muckish Mountain, providing opportunities for challenging ascents and descents. The landscape is shaped by Atlantic swells and winds, creating varied environments for off-road cycling.

Are there mountain bike trails suitable for beginners in Portnablahy?

Yes, there are options for various skill levels. For beginners, the Caldwell Castle to Derrin Mountain loop is an easy 30.2 km (18.8 miles) trail that takes approximately 1 hour 58 minutes to complete. This route leads through forested areas and past historical sites, offering a gentler introduction to mountain biking in the region.

What are some challenging mountain bike routes near Portnablahy?

For experienced riders seeking a challenge, the Tully Castle to Cliffs of Magho viewpoint and Ballintempo Forest loop is a difficult 66.4 km (41.3 miles) route, typically taking around 5 hours 16 minutes. This trail features significant elevation changes and rugged sections, providing a demanding ride through scenic landscapes.

What natural features or landmarks can I see along the mountain bike trails?

The trails around Portnablahy offer access to stunning natural beauty and historical sites. You can encounter features like the dramatic coastline, beaches such as Marble Hill Strand, and the impressive quartzite cliffs of Horn Head. Some routes may lead you past significant landmarks like View of Lough Erne from Cliffs of Magho, St Patrick's Purgatory, or Castle Caldwell Ruins. The wider County Donegal region is known for its mountains, lakes, and forests.

Are there any circular mountain bike routes available?

Yes, several routes are designed as loops. For example, the Caldwell Castle to Derrin Mountain loop is an easy circular trail, and the Pettigo to Lough Derg and St Patrick's Purgatory loop offers a moderate, scenic circular ride around Lough Derg.

What is the best season for mountain biking in Portnablahy?

The best season for mountain biking in Portnablahy, and County Donegal generally, is typically from late spring to early autumn (May to September). During these months, the weather is usually milder and drier, making trail conditions more favorable. However, the rugged landscape means conditions can change quickly, so always be prepared for varied weather.

What do other mountain bikers enjoy most about the trails in Portnablahy?

The mountain bike trails around Portnablahy are highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the varied terrain, from coastal paths to forest trails and rolling hills, which offer options for different ability levels. The scenic views and the sense of exploring a wild, natural landscape are frequently highlighted.

Are there family-friendly mountain bike trails near Portnablahy?

While specific 'family-friendly' designated mountain bike trails are not detailed, the region's extensive forest parks, such as Ards Forest Park, offer multi-use paths that can be suitable for families looking for gentler rides. The Caldwell Castle to Derrin Mountain loop, being an easy route, could also be a good option for families with some biking experience.

Can I bring my dog on the mountain bike trails?

Many outdoor areas in County Donegal, including forest parks and coastal paths, are generally dog-friendly, especially if dogs are kept on a leash. However, specific regulations can vary by trail or protected area. It's always best to check local signage or the specific trail's guidelines before heading out with your dog to ensure a safe and enjoyable experience for everyone.

Are there places to eat or stay near the mountain bike routes?

Portnablahy and the surrounding towns in County Donegal offer various amenities. You'll find cafes, pubs, and accommodation options ranging from guesthouses to hotels. These can serve as convenient bases for your mountain biking adventures, allowing you to refuel and relax after your rides. Specific recommendations would depend on the exact starting point of your chosen trail.

How long are the mountain bike trails around Portnablahy?

The mountain bike trails in the area vary in length. For instance, the easy Caldwell Castle to Derrin Mountain loop is 30.2 km (18.8 miles), while the moderate Pettigo to Lough Derg and St Patrick's Purgatory loop covers 54.9 km (34.1 miles). The most challenging route, Tully Castle to Cliffs of Magho viewpoint and Ballintempo Forest loop, extends to 66.4 km (41.3 miles).

Is there public transport or parking available for accessing the trails?

While specific parking details for individual trailheads are not always listed, Portnablahy and nearby towns typically offer public parking facilities. Public transport options in rural County Donegal can be limited, so planning your journey, especially for accessing more remote trail starts, is advisable. It's often recommended to use a car to reach many of the trailheads in this region.

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