14 miles a day, ELITE for sure!! I've run the roads/trails from Maho to Leinster to Francis back to Maho. Its flat and early morning not much traffic. It might be a 4 mile loop? She can park at any of those beaches or Annanberg Ruins and cool off at the end with a swim. She should know some is paved and some dirt roads, also I wouldnt recommend running with headphones, i like to hear the traffic coming! Since she will need to run a loop like this she can keep water in her car for a sip every pass. Coral Bay has a flat stretch, but a little more traffic there.