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Routes
Mountain biking trails
Ireland
Donegal

Muckish Railway and Lough Agher Loop

Routes
Mountain biking trails
Ireland
Donegal

Muckish Railway and Lough Agher Loop

Moderate

Muckish Railway and Lough Agher Loop

02:13

28.0km

310m

Mountain biking

Mountain bike the Muckish Railway and Lough Agher Loop, a moderate 17.4-mile route with 1004 feet of elevation gain in County Donegal.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

10.6 km

Beautiful track

Highlight (Segment) • Trail

Beautiful double track which runs alongside Lough Achair with a backdrop of rolling green hills.

Tip by

2

14.2 km

Behind the lake, the striking silhouette of Muckish is clearly visible. There is a cairn on the summit plateau – perhaps you can even recognize it from here?

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Tip by

B

28.0 km

End point

Parking

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Way Types & Surfaces

Way Types

11.5 km

9.37 km

5.94 km

1.16 km

Surfaces

15.9 km

9.15 km

1.62 km

1.38 km

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Elevation

Elevation

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

Highest point (200 m)

Lowest point (20 m)

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Weather

Powered by Foreca

Thursday 9 July

19°C

12°C

0 %

Additional weather tips

Max wind speed: 24.0 km/h

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Frequently Asked Questions

How long does it take to mountain bike the Muckish Railway and Lough Agher Loop?

The full loop is approximately 28 km (17.4 miles) and typically takes around 2 hours and 12 minutes to complete on a mountain bike, depending on your pace and stops.

Is the Muckish Railway and Lough Agher Loop suitable for beginners?

Yes, the main Muckish Railway Walk, which includes the Lough Agher Loop, is generally considered an easy cycle. It features a relatively flat, well-maintained surface with gentle gradients, including a smooth tarmac section. This makes it suitable for beginners and those looking for a relaxed ride. However, be aware that routes climbing Muckish Mountain itself are significantly more challenging.

What is the terrain like on this mountain bike route?

The terrain is quite varied but generally manageable. You'll encounter sections of paved path (including a 2km tarmac stretch), quiet road, bog track, farm track, open ground, gravel, and grass. The old railway line sections are typically even and well-maintained. If you venture onto Muckish Mountain, the terrain becomes much more challenging, with rocky, muddy, and steep paths.

What can I see along the Muckish Railway and Lough Agher Loop?

The route offers breathtaking views of the Donegal landscape, including Muckish Mountain and Lough Agher. You'll also see rolling hills, farmlands, and on a clear day, glimpses of the Atlantic Ocean and Tory Island. The trail follows the historic old railway line, so you'll pass remnants like old stone railway bridges and other infrastructure. Don't miss the Lough Naboll with a view of Muckish Mountain and enjoy the Beautiful track itself.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Letterkenny and Burtonport Extension Railway, the Donegal Cycle Route, EuroVelo 1, and the Errigal Way - Donegal Way.

Is the Muckish Railway and Lough Agher Loop dog-friendly?

While the trail is generally accessible, it's advisable to keep dogs on a leash, especially in sections that pass through farmlands or near livestock. Always clean up after your pet to maintain the natural beauty of the area.

What is the best time of year to mountain bike this route?

Spring, summer, and early autumn are generally the best times to ride this trail. During these seasons, you'll experience milder weather, longer daylight hours, and the landscape is vibrant with heather and greenery. Be prepared for changeable weather conditions typical of Donegal, even in summer.

Do I need a permit or is there an entrance fee for this trail?

No, there are no permits or entrance fees required to access the Muckish Railway and Lough Agher Loop. It is freely accessible to the public.

Where can I park to access the Muckish Railway and Lough Agher Loop?

Parking is typically available at various access points along the old railway line. For the Lough Agher Loop, look for designated parking areas near Gortahork or other villages along the route. Specific parking details might vary, so checking local signage upon arrival is recommended.

Are there any cafes or pubs near the trail?

Yes, you'll find cafes and pubs in the nearby villages such as Gortahork, which is a good starting point for the loop. These establishments offer a chance to refuel and relax before or after your ride.

Is it a loop trail or out-and-back?

The Muckish Railway and Lough Agher Loop is, as its name suggests, a loop trail. This means you'll start and finish at the same point without having to retrace your steps.

What should I bring for a mountain bike ride on this trail?

Even though parts of the trail are easy, it's always wise to bring essentials. This includes water, snacks, a basic bike repair kit, appropriate clothing for changeable weather, a helmet, and a map or GPS device. Sunscreen and insect repellent can also be useful.

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