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Vale of Glamorgan
Penarth

Cardiff Bay Barrage Locks

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Cardiff Bay Barrage Locks

Mountain biking

5.0

(4)

Gravel riding

5.0

(1)

Road cycling

5.0

(1)

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    Location: Penarth, Vale of Glamorgan, South Wales, Wales, United Kingdom

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    July 12, 2025

    Mountain biking

    Each lock is crossed by a Bascule bridge, to carry pedestrians and vehicles across. These are lifted for boats to pass. The weight of the bridge deck is counterbalanced by an overhead weight on the opposite side of the pivot.

    Five sluice gates control the level of water in the Bay. Each sluice gate is 9 metres wide and 7.5 metres high. The sluices open to maintain the level of the Bay, and close when the estuary level is higher than the Bay to prevent seawater entering the freshwater lake.

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    Best routes to Cardiff Bay Barrage Locks

    45

    riders

    1. Cardiff Bay Barrage Locks – Blue Bridge, Radyr loop from Radyr

    33.3km

    01:56

    170m

    170m

    Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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    Easy

    Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

    Moderate

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    Elevation 10 m

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    Saturday 21 February

    12°C

    9°C

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    Location: Penarth, Vale of Glamorgan, South Wales, Wales, United Kingdom

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