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Hiking trails & Routes

East Cairn Hill – Harperrig Reservoir loop from Cairns Castle

Hiking trails & Routes

East Cairn Hill – Harperrig Reservoir loop from Cairns Castle

Moderate

5.0

(2)

13

hikers

East Cairn Hill – Harperrig Reservoir loop from Cairns Castle

03:28

11.7km

300m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 31, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Pentland Hills Regional Park

Waypoints

A

Start point

Parking

1

4.47 km

East Carn Summit

Highlight • Viewpoint

Best done during a dry spell.

Tip by

2

5.23 km

East Cairn Hill

Highlight • Natural Monument

East Cairn Hill at 561m is 1m lower than West Cairn Hill which is 1.5km away to the southwest. The views from the cairn are great, across the southern Pentland Hills and north to the Forth valley.

Tip by

3

6.66 km

Thieves Road Camp Spot

Highlight • Viewpoint

If you don't mind the ground being a bit boggy, this is a lovely spot in the Pentland Hills to camp, especially if you catch the sun setting.

Tip by

4

7.03 km

Cauldstane Slap

Highlight • Mountain Pass

5

9.93 km

Harperrig Reservoir

Highlight • Natural

Harperrig Reservoir was created in 1860 as part of a scheme to create a safe and reliable supply of drinking water for Edinburgh. The dam was raised in 1890 to …

Tip by

6

11.2 km

Cairns Castle Ruins

Highlight • Historical Site

Cool castle, track around south side of reservoir is rough but doable with some questing!

Tip by

B

11.7 km

End point

Parking

Way Types & Surfaces

Way Types

10.6 km

1.04 km

< 100 m

Surfaces

7.35 km

3.29 km

559 m

389 m

< 100 m

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Elevation

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

Highest point (560 m)

Lowest point (270 m)

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Weather

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Monday 19 October

12°C

8°C

-- %

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