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Running trails & routes

Harlaw Reservoir – Threipmuir Reservoir loop from Lennox Tower

Running trails & routes

Harlaw Reservoir – Threipmuir Reservoir loop from Lennox Tower

Hard

25

runners

Harlaw Reservoir – Threipmuir Reservoir loop from Lennox Tower

01:30

12.6km

210m

Running

Hard run. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: August 18, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Pentland Hills Regional Park

Waypoints

A

Start point

Parking

Get Directions

1

418 m

Harlaw Reservoir

Highlight • Viewpoint

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 …

Tip by

2

668 m

Harlaw Reservoir

Highlight • Structure

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.

Tip by

3

9.00 km

Bavelaw Castle Drive

Highlight (Segment) • Trail

Steep, tree-lined drive up to Bavelaw castle. Reliably car-free. Especially beautiful at dawn.

Tip by

4

9.77 km

Woodland Path by Threipmuir Reservoir

Highlight (Segment) • Lake

Great path cutting to and from the reservoirs

Tip by

5

11.0 km

Threipmuir Reservoir

Highlight • Natural

Superb spot at the foot of the Pentlands, easy gravel paths and lots of swimming spots. Busy with walkers and cyclists.

Tip by

B

12.6 km

End point

Parking

Way Types & Surfaces

Way Types

4.77 km

3.26 km

1.98 km

1.91 km

680 m

Surfaces

3.95 km

3.87 km

1.90 km

1.79 km

784 m

295 m

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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 (400 m)

Lowest point (250 m)

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Weather

Powered by Foreca

Sunday 6 September

17°C

12°C

87 %

Additional weather tips

Max wind speed: 28.0 km/h

to get more detailed weather forecasts along your route

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