This article is from the Hanggliding and Paragliding FAQ, by Joao Geada with numerous contributions by others.
Yes. Bob Thompson of Phoenix, Arizona, USA held his state's XC record
for many years at over 210 miles (over 320 km.). He consistently
outflew many prone pilots during this period. In New England there are
several dedicated supine XC pilots with site records which still
stand.
 
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