17 A Great Langdale Round Walk 17 from Walk! the Lake District (South) guide book by Charles Davis, published by Discovery Walking Guides Ltd. Ratings: Exertion Rating 5 of 5, Time 6.5 hours, Distance 12.7miles/20.4kilometres, Ascents 1350 metres, Descents 1350 metres, Refreshments 4 rating. Circular walking route Copyright Discovery Walking Guides Ltd. All rights reserved. We have taken all reasonable steps to ensure these walks are safe and correctly described. However things do change and all outdoor activities involve a degree of risk. The publishers accept no responsibility for any errors or omissions or for any injuries or accidents that occur whilst following this walk.