Adra Tunnel (aka The Big Tunnel) is a long tunnel on the Kettle Valley Rail Trail. This spiral tunnel, 489 meters (1604 feet) long, was the longest tunnel on the KVR. The entrances are partially blocked with cement walls to prevent access due to rock falls and some flooding. The Kettle Valley Rail-Trail/ Trans Canada Trail bypasses the tunnel via a short trail. Although it's blocked a short way in due to instability, it's still worth checking out. In Aug 2022, with increased interest in bikepacking the KVR, there were rumours of a restoration project.

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Best routes to Adra Tunnel (The Big Tunnel)

5.0

(2)

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1. View of Okanagan Lake – Adra Tunnel (The Big Tunnel) loop from Penticton

86.3km

08:12

980m

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2. Adra Tunnel (The Big Tunnel) – View of Okanagan Lake loop from Lower Debeck at Rusnberry (EB)

90.7km

08:43

1,600m

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

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Elevation 940 m

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Tuesday 10 February

8°C

2°C

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Location: Area E (Naramata/Greyback), British Columbia, Canada

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Adra Tunnel (The Big Tunnel)

1. View of Okanagan Lake – Adra Tunnel (The Big Tunnel) loop from Penticton

2. Adra Tunnel (The Big Tunnel) – View of Okanagan Lake loop from Lower Debeck at Rusnberry (EB)

Other Popular Places to Check Out

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