Is it safe to let my 16 yr old daughter go running along a beach after school?

My daughter wants to loose weight (she is very slightly overweight) and she has been eating healthily and she wants to know if she can go running along the beach everyday after school for an hour. it is about a 20 minute walk from our house so i will not be able to check up on her. should i let her go. i am worried she will get attacked or abducted!