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Poldice Valley Mining Ruins – Carnon Viaduct loop from Camborne

Routes

Bike touring routes & trails

Poldice Valley Mining Ruins – Carnon Viaduct loop from Camborne

Hard

4.9

(9)

144

riders

Poldice Valley Mining Ruins – Carnon Viaduct loop from Camborne

03:47

51.0km

510m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 27, 2026

Tips

Includes a segment that goes up or down a series of steps

You may need to carry your bike.

After 3.82 km for 3 m

Waypoints

Start point

Train Station

Get Directions

7.12 km

Carn Brea Castle

Highlight • Historical Site

There's a great network of gravel trails across Carn Brea, which are a mixture of bridleways and footpaths, so best to check before you ride.

At the top, the Carn Brea Castle dates back to the 14th century when it was built as a chapel before being converted into a hunting lodge in the 18th century.

Now the castle is run as a Middle Eastern cuisine restaurant. Quite the setting!

Tip by

11.5 km

Carn Marth Quarry Pool

Highlight • Summit

Just south east of Redruth, Carn Marth hill has a summit reaching 771 feet (235 m). Once heavily quarried for granite, there's a large pool near the top which can be eerie in cloud and stunning sunshine.

From the summit, enjoy rather extravagant views in every direction, particularly of Cornwall's western coastline. The hill also has an amphitheatre, frequently showing wonderful performances from local and touring groups.

Tip by

16.7 km

Poldice Valley Mining Ruins

Highlight • Viewpoint

Poldice Valley is a beautiful spot with a rich mining history. A mine has existed in the valley as far back as the 16th century, extracting tin ore and copper from the area. The Portreath Tramroad was opened in 1812 to transport the materials to Portreath harbour. The mines slowly declined towards the end of the 19th century and ceased operating in 1930. Today, you can still see many ruined mine buildings and mineshafts in the valley.

Tip by

19.7 km

Point Hills Arsenic Refinery Chimney

Highlight • Historical Site

Point Hills Arsenic Refinery was run by the British Arsenic Company, which became the Cornwall Arsenic Company. The arsenic works closed at the beginning of World War Two after being active for a century. The chimney has been preserved and is all that remains of the arsenic works.

Tip by

21.6 km

Carnon Viaduct

Highlight • Historical Site

This Old Rail & Road Bridge is an amazing part of Engineering work, people just walk, run, bike ride or horse ride under neath this strucktour & dont and notice, a great pity.

Tip by

23.9 km

Devoran Quay

Highlight • River

Devoran is the end, or start of the Cornish off road coast to coast trail which journeys from (or to!) Portreath. There is a pub, The Old Quay Inn, for refreshments and a car park, next to the A39, which is a handy place to park if you are starting a ride here.

In the 19th century Devoran was an important transport hub for the mining industry. Tin and copper were brought here by railway from the Gwennap mines. When the price of tin fell dramatically, mining was no longer the huge industry it was before and the creek silted up through its lack of use.

Tip by

27.9 km

Lily Pond

Highlight • Lake

33.0 km

Unity Wood

Forest

41.4 km

Nance Wood

Forest

42.6 km

Portreath Harbour Entrance

Highlight • Beach

Portreath has an inner and outer harbour. The harbour was historically an important port and was one of the earliest industrial ports in Cornwall. Cornwall's first railway, the Portreath Tramroad, linked the harbour to the mines in Scorrier and St Day.

Close to the harbour entrance is a white circular hut which is located on a raised section of cliff. This hut is known as 'Dead Man's Hut' and was initially the Harbour Master's lookout. The name originates from when the hut was used as a temporary morgue for bodies washed ashore.

Tip by

51.0 km

End point

Train Station

Way Types & Surfaces

Way Types

22.7 km

11.0 km

6.01 km

5.64 km

5.29 km

239 m

148 m

Surfaces

16.2 km

14.8 km

12.6 km

7.13 km

294 m

Elevation

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

Highest point (220 m)

Lowest point (0 m)

Weather

Thursday 2 July

19°C

11°C

0 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

Comments

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Poldice Valley Mining Ruins – Carnon Viaduct loop from Camborne

Carn Brea Castle

Carn Marth Quarry Pool

Poldice Valley Mining Ruins

Point Hills Arsenic Refinery Chimney

Carnon Viaduct

Devoran Quay

Lily Pond

Portreath Harbour Entrance

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