Carnon Viaduct – Poldice Valley Mining Ruins loop from St. Agnes

Bike touring routes & trails

Carnon Viaduct – Poldice Valley Mining Ruins loop from St. Agnes

Moderate

4.7

(27)

215

riders

Carnon Viaduct – Poldice Valley Mining Ruins loop from St. Agnes

02:45

36.0km

330m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. The starting point of the route is accessible with public transport.

Last updated: August 21, 2026

Waypoints

Start point

Bus stop

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6.67 km

Killifreth Engine House

Highlight • Monument

Nice location to stop & take a break.

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10.9 km

Twelveheads Cafe

Highlight • Cafe

Lovely food, great service. We came across this cafe just at the right time in our ride!

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12.2 km

Nestled in the Poldice Valley by Bissoe village, the Bike Chain is a great little cycling shop with a brilliant cafe too. Get everything you need for a ride around the mining trails or the quiet lanes here under one roof; whether that's spare tools, a large slice of cake or simply a little more air in your tyres!

Check out seasonal opening times and events at bikechainbissoe.co.uk/cafe

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12.3 km

Charity Refreshment Stall

Highlight • Cafe

nice homemade comestibles, all for charity, wonderful

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12.4 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.

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14.3 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.

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18.4 km

Penpol Creek

Lake

25.4 km

Lily Pond

Highlight • Lake

28.6 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.

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