4.4
(98)
1,075
riders
97
rides
Mountain bike trails around Harlaw Reservoir are set within the picturesque Pentland Hills, offering a diverse landscape for riders. The area features rolling hills, open waters of Harlaw and Threipmuir Reservoirs, and mixed woodlands. Terrain varies from gravel and unpaved natural paths to some paved sections, providing a range of riding experiences. The region's geology includes Lower Carboniferous sedimentary rocks, adding to the natural environment.
Last updated: July 8, 2026
4.7
(3)
12
riders
15.3km
01:28
320m
320m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
7
riders
10.4km
00:53
170m
170m
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

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6
riders
22.7km
02:07
430m
430m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.9
(19)
180
riders
17.3km
01:18
270m
270m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Fine to ascend / descend on a gravel bike. May need to hike a small 20m section depending on tyre width as the stones get a bit bigger for a small section, would be fine to ride down though
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Fine to ascend / descend on a gravel bike, not easy though :). There may be a small 20m section you have to hike depending on your tyre width as the stones get a bit bigger for a small section
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Great descent on a gravel bike, smooth but with some little drops from the occasional step. Very fun!
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Harlaw Reservoir is a popular spot for outdoor activities including walking, fishing, and wildlife watching. One of the highlights is a small embankment on the far side of the reservoir which offers stunning views of Threipmuir Reservoir. On weekends visitors you can get your hands on some homemade crepes from a local van parked near the Harlaw House Visitor Centre.
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There are nearly 100 mountain bike trails around Harlaw Reservoir, offering a wide range of options for different skill levels. Over 30 of these are rated as easy, making the area accessible for many riders.
Yes, Harlaw Reservoir offers a good selection of easy mountain bike trails. For a gentle ride, consider the Pentland Hills Access Road loop from Lennox Tower, which is 6.0 miles (9.7 km) long and leads through the foothills. Another accessible option is the Threipmuir Reservoir – Pentland Hills Access Road loop from Red Moss of Balerno Wildlife Reserve, an 11.1 km route with minimal elevation gain.
The terrain around Harlaw Reservoir is varied, featuring gravel, unpaved, and natural paths, alongside some paved sections. You'll encounter rolling hills, open waters, and mixed woodlands, providing a diverse riding experience within the Pentland Hills.
Yes, many routes around Harlaw Reservoir are circular. For example, the Pentland Hills Access Road – Green Cleugh Valley loop from Balerno is a 17.3 km circular trail that offers scenic views and explores the Green Cleugh Valley.
While riding, you'll be surrounded by the picturesque Pentland Hills, with views of peaks like West Kip, Scald Law, and Carnethy Hill. The trails often pass by Harlaw and Threipmuir Reservoirs, and through mixed woodlands. You might also encounter the Harlaw wildlife garden, known for its biodiversity.
Yes, parking is available at Harlaw Reservoir. The main car park is located near the reservoir itself, providing convenient access to the trail network.
Public transport options are available to reach the vicinity of Harlaw Reservoir. Buses serve nearby villages like Balerno, from where you can cycle to the reservoir. It's advisable to check local bus schedules and routes for the most current information.
Dogs are generally welcome on the trails around Harlaw Reservoir, 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 close at heel.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 90 reviews. Riders frequently praise the diverse landscape, the variety of trails catering to different skill levels, and the stunning views of the Pentland Hills and reservoirs.
While Harlaw Reservoir itself is primarily a natural area, nearby villages such as Balerno offer cafes and pubs where you can refuel after your ride. These establishments provide options for refreshments and meals.
Yes, for experienced riders seeking a challenge, the Pentland Hills offer more strenuous ascents and descents. The 'Pentlands 5 Peaks Harlaw Loop' is a challenging 15-mile red route that climbs 2,748 ft, providing stunning views and enjoyable descents for those with advanced skills.
Generally, you do not need a specific permit to cycle on the public access trails around Harlaw Reservoir. The Scottish Outdoor Access Code grants rights of responsible access to most land and inland water. However, always respect private land and any local signage.


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