Performance

• Timed attempts to complete a 'natural challenge' route such as a circumnavigation or crossing.
  These are routes that can be feasibly (but don't have to be) completed in a single day.
  
  
• Examples:
  Circumnav of Anglesey.
  Circumnav of Hayling Island.
  Circumnav of Isle of Wight.
  Crossing of St George's Channel.
  Crossing of the North Channel.