4.7
(6)
74
riders
26
rides
Gravel biking around Harperrig Reservoir offers diverse terrain within the Pentland Hills in West Lothian, Scotland. The landscape features a mix of rolling hills, open moorland, and the reservoir itself, providing varied topography. Routes often utilize old drovers' roads and forest tracks, encompassing both paved and unpaved segments. Cyclists can expect elevation gains across a network of trails suitable for gravel bikes.
Last updated: October 20, 2026
5.0
(1)
11
riders
24.7km
01:30
180m
180m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
16
riders
56.4km
03:27
470m
470m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

5.0
(1)
7
riders
22.4km
01:23
180m
180m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
18
riders
43.8km
02:40
330m
330m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
14.5km
01:00
190m
190m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Pretty big persistent puddles, often quite deep or rough underwheel. The sort of path which is doable with a sendy spirit on a gravel bike, but would be much more fun on a hardtail. The path you join if heading west is great fun.
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This is a great bike section with a nice approach over the bridge and causeway of Threipmuir Reservoir that has great views over each side. Exponential Hill itself is a beautiful tree-lined avenue that is very scenic. The section itself is only 462 metres long but has a sharp 49 metres of height gain. A stunning place overall and a nice hill section to take in on the way to Bavelaw Castle.
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Wilsontown, great information on this section regarding the history of the Town and it's close association with Iron production. The paths are easy going having been paved.
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Change into your biggest gear and give it some welly!!!
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Pretty rough on a gravel bike. Just about ridable in wet weather (with plenty of hike-a-bike) with mud-capable tyres.
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This is our favourite MTB loops for a quick spin from our factory gates - perfect for a lunchtime blast using Livingston's amazing off-road paths and a couple of cheeky bits of singletrack either side of the main Edinburgh to Glasgow motorway. Look out for UFO landing site memorial stone and take a trip up Dechmont Law for great views across town to the Pentlands.
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Built in 1885 this viaduct once carried the single-track mineral railway which served the local industry. The railway closed in 1956 but walkers can cross or walk underneath to get a view of the 9 arches.
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There are over 40 gravel bike trails available around Harperrig Reservoir, offering a wide range of options for different skill levels and preferences. The komoot community has explored these routes over 90 times.
The terrain around Harperrig Reservoir is diverse, featuring rolling hills and open moorland within the Pentland Hills. You'll encounter a mix of paved and unpaved segments, including historic drovers' roads. Routes can vary from smoother paths to more rugged, natural trails with significant elevation changes.
Yes, the area is rich in history. You can explore the ruins of Cairns Castle, dating back to around 1440, which projects into the reservoir. Old drovers' roads like the Cauldstane Slap also weave through the landscape, and there are Bronze Age Scheduled Ancient Monuments on East Cairn Hill and West Cairn Hill. For more information on the reservoir itself, you can visit Harperrig Reservoir on Wikipedia.
Many of the gravel bike routes around Harperrig Reservoir are designed as loops. For example, the challenging Wilderness Wood – Pateshill Wind Farm loop from Livingston South offers expansive views, while the extensive Black Law Wind Farm – Wilsontown Inn Ruins loop from Kirknewton features significant elevation gain through remote moorland.
The trails range from moderate to difficult. You'll find 6 easy, 22 moderate, and 14 difficult routes. Some routes, like the Threipmuir Reservoir – Glencorse Reservoir Overflow loop from Livingston South, are considered difficult due to their length and elevation.
While many routes involve varied terrain and elevation, there are moderate options available. For a shorter, less strenuous ride, consider the Wilderness Wood – Calder Wood Wild Garlic Trail loop from East Calder, which leads through varied woodland and open areas and is often completed in about 1 hour 30 minutes.
The Pentland Hills area is generally welcoming to dogs, but it's important to keep them under control, especially around livestock and wildlife. Always follow the Scottish Outdoor Access Code, which advises keeping dogs on a lead or under close control near farm animals and during bird breeding seasons.
The region offers stunning panoramic views. Mount Maw, at 535m, provides extensive vistas over the Southern Uplands and the Pentland Hills. Trails to East Cairn Hill also offer wide-ranging views over West Lothian and Fife. The reservoir itself, with Gull Island, is a tranquil and scenic spot.
While direct public transport to the reservoir's immediate vicinity can be limited, you can often reach nearby towns like Livingston South or Kirknewton by train or bus. From there, you might need to cycle or arrange for a short taxi ride to reach the trailheads. It's advisable to check local bus and train schedules for the most up-to-date information.
Parking is typically available at various access points around the Pentland Hills and near Harperrig Reservoir. Specific parking areas can be found near popular trailheads or villages in the vicinity. Always ensure you park responsibly and do not obstruct local access or private property.
Spring and summer generally offer the most pleasant conditions for gravel biking, with milder weather and longer daylight hours. Autumn can also be beautiful with changing foliage. Winter rides are possible but be prepared for colder temperatures, potential ice, and boggy sections, especially on less maintained trails like parts of The Thieves Road.
While Harperrig Reservoir itself is quite rural, nearby villages and towns in West Lothian offer various amenities. You can find cafes, pubs, and shops in places like Livingston, Mid Calder, or West Linton, which are often starting or ending points for longer routes. It's a good idea to plan your route to include a stop if you're looking for refreshments.
The area is highly rated by the komoot community, with an average score of 4.7 stars from over 7 reviews. Reviewers often praise the diverse terrain, expansive views, and the unique experience of riding through the Pentland Hills and along historic drovers' roads. The Camps Viaduct – Almondell Country Park loop from Livingston South is another popular choice among local riders.


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