Possible Clues:

• Remote from the 3 Dn
• Shore that's not where it is at all
• What 5 down could never be
• What you might start in half a century and not coast along there
• towards a country's interior
• Less likely to be hit by a hurricane
• Where an is, there's nothing 20 down
• Not on the shore
• San Bernardino, vis-à-vis Los Angeles
• Like Offaly for one ... the Netherlands also