Originally Posted by
englishal
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I wouldn't necessarily avoid routing overhead airfields, especially if much higher
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If you overfly Lasham and surrounding areas on even a moderate day in gliding terms, you are likely to find gliders all the way up to cloudbase, or up to the bottom of any class A airspace - whichever is lower. Ditto any other gliding site. So have a good look at your chart when planning - gliding sites are marked, as are areas of 'Intense gliding activity'.