Introduction A cross-country flight is defined as one in which the glider has  flown beyond gliding distance from the local soaring site. Cross- country soaring seems simple enough in theory; in reality, it  requires a great deal more preparation and decision-making than  local soaring flights. Items that must be considered during cross- country flights are how good the thermals ahead are, and if they  will remain active, what the landing possibilities are, which airport  along the course has a runway that is favorable for the prevailing  wind conditions. What effect will the headwind have on the glide?  What is the best speed to fly in sink between thermals? Flying cross-country using thermals is the basis of this chapter. A  detailed description of cross-country soaring using ridge or wave  lift is beyond the scope of this chapter. Cross-Country Soaring Chapter 11