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United Kingdom
Scotland
Lothian
Edinburgh

Harlaw Reservoir

The best cycling routes around Harlaw Reservoir

4.4

(323)

5,207

riders

270

rides

Touring cycling around Harlaw Reservoir offers varied terrain within the scenic Pentland Hills, southwest of Edinburgh. The area features tranquil reservoir views, woodlands, and rolling hills. Cyclists can navigate a mix of paved and unpaved surfaces, with routes providing vistas of other reservoirs like Threipmuir and Glencorse. The landscape includes open fields and tree-lined sections, characteristic of the Pentland Hills Regional Park.

Best touring cycling routes around Harlaw Reservoir

  • The most popular touring cycling route is Threipmuir Reservoir – Glencorse Reservoir Overflow loop from Lennox Tower, a 5.9 miles (9.5 km) trail that takes about 43 minutes to complete. This difficult route offers views of both Threipmuir and Glencorse Reservoirs.
  • Another top favourite among local touring cyclists is Glencorse Reservoir Overflow – Threipmuir Reservoir loop from Lennox Tower, an easy 4.2 miles (6.7 km) path. This route provides a gentler loop around the reservoirs, suitable for a quicker ride.
  • Local touring cyclists also love the The Red Road, Pentland Hills – Balerno Hill Summit loop from Red Moss of Balerno Wildlife Reserve, a 10.9 miles (17.5 km) trail leading through the Pentland Hills, often completed in about 1 hour 48 minutes.
  • Touring cycling around Harlaw Reservoir is defined by tranquil reservoirs, rolling hills, and mixed terrain paths. The network offers options for various ability levels, from easy loops to more challenging climbs within the Pentland Hills.
  • The routes in Harlaw Reservoir are highly rated by the komoot community with an average score of 4.4 stars from over 290 reviews. More than 5000 touring cyclists have used komoot to explore Harlaw Reservoir's varied terrain.

Last updated: May 15, 2026

16

riders

#1.

Threipmuir Reservoir – Glencorse Reservoir Overflow loop from Lennox Tower

9.45km

00:43

60m

60m

Hard bike ride. Great for any fitness level. You may need to push your bike for some segments of this route.

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Hard

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Easy
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Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

Easy

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.

Hard
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Popular around Harlaw Reservoir

Hiking around Harlaw Reservoir

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Tips from the Community

Grace Mulligan
November 6, 2024, Harlaw Reservoir

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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Often busy with dog-walkers at peak times

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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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Pretty steep uphill from Threipmuir to Harlaw. Easy enough to walk up/down.

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Threipmuir Reservoir (west) & Harlaw Reservoir (east) where built in the mid-1800s to increase the water supply for the Edinburgh area. Both have great lakeside trails for a flatter run in the Pentlands.

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51m
July 12, 2023, Harlaw Reservoir

Harlaw Reservoir was constructed between 1843 and 1848, at the same time as the larger Threipmuir Reservoir upstream. It's a simple gravity earth dam construction that adds to the volume of water available for Edinburgh.

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North Esk Reservoir is an easy 5k walk from Carlops village. You can park your car in the village and choose one of the two main paths or do a circular walk. Easy to intermediate terrain with some steep hilly parts as well. The reservoir is a gem.

2

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Great views - well worth the climb up (525m)

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Frequently Asked Questions

How many touring cycling routes are available around Harlaw Reservoir?

There are nearly 280 touring cycling routes around Harlaw Reservoir, offering a wide range of options for different skill levels and preferences. Over 100 of these are classified as easy, making the area accessible for many cyclists.

What kind of terrain can I expect when cycling around Harlaw Reservoir?

The terrain around Harlaw Reservoir is quite varied, characteristic of the Pentland Hills. You'll encounter a mix of paved roads, unpaved paths, and access roads. Some sections involve significant climbs, while others offer enjoyable downhill stretches, providing a diverse cycling experience. For more rugged sections, a hybrid or mountain bike might be beneficial.

Are there any family-friendly cycling routes near Harlaw Reservoir?

Yes, there are many family-friendly options. For an easier ride, consider the Glencorse Reservoir Overflow – Threipmuir Reservoir loop from Lennox Tower, which is an easy 4.2-mile (6.7 km) path offering a gentler loop around the reservoirs. Another easy option is the Threipmuir Reservoir – Glencorse Reservoir Overflow loop from Balerno, which is 5.3 km long.

Where can I park when visiting Harlaw Reservoir for cycling?

Convenient car parks are available directly at Harlaw Reservoir and the adjacent Threipmuir Reservoir, making it easy to start your cycling adventure. The area is also easily accessible from Edinburgh, located about 8 miles southwest of the city center near Balerno.

What are some notable natural features or viewpoints along the cycling routes?

Cyclists can enjoy stunning vistas of the rolling Pentland Hills and tranquil reservoir views. The small embankment on the far side of Harlaw offers exceptional views of Threipmuir Reservoir. Higher points like Allermuir Hill provide expansive views of central Scotland, including the Firth of Forth bridges and even distant mountains. You might also encounter tree-lined avenues like 'Exponential Hill' and areas with purple heather.

Are there any historical sites or landmarks to explore while cycling?

Yes, beyond the natural beauty, you can discover historical sites. Nearby Bavelaw Castle and the ruins of Cairns Castle add cultural interest to a visit, offering glimpses into the region's past as you cycle through the landscape.

Can I connect to other cycling trails from Harlaw Reservoir?

Absolutely. From Balerno, you can connect to the Water of Leith Walkway, a well-surfaced cycling and walking trail that extends into Edinburgh. For longer excursions, the Cross Borders Drove Road can be picked up southwest of Harperrig Reservoir, allowing you to extend your routes further into the Pentland Hills.

What do other touring cyclists enjoy most about cycling in Harlaw Reservoir?

The area is highly rated by the komoot community, with an average score of 4.4 stars from nearly 300 reviews. Cyclists often praise the tranquil reservoir views, the varied terrain that keeps rides interesting, and the sense of being immersed in nature within the Pentland Hills Regional Park.

Are there options for more challenging touring cycling routes?

Yes, for those seeking a challenge, routes like the Threipmuir Reservoir – Glencorse Reservoir Overflow loop from Lennox Tower offer a more difficult experience. This 9.5 km route includes climbs and varied terrain, providing a good workout with rewarding views of both Threipmuir and Glencorse Reservoirs.

Are there any facilities or places to get refreshments near the cycling routes?

The Harlaw House Visitor Centre is a convenient stop. On weekends, you might find a local van nearby selling homemade crepes, sandwiches, and hot drinks, perfect for a refreshment break during your ride.

What is the best time of year to go touring cycling around Harlaw Reservoir?

The Pentland Hills offer beautiful scenery year-round. Spring and summer provide lush greenery and longer daylight hours, while autumn brings vibrant colors to the woodlands. Even in winter, with appropriate gear, the tranquil landscapes can be enjoyed, though some paths might be more challenging due to weather conditions.

Are there any circular touring cycling routes available?

Yes, many routes are designed as loops, allowing you to start and end at the same point. For example, the The Red Road, Pentland Hills – Balerno Hill Summit loop from Red Moss of Balerno Wildlife Reserve is a moderate 17.5 km circular trail that takes you through the heart of the Pentland Hills.

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