Praise be to Allaah.
The majority of scholars defined the distance at which a
traveller may shorten his prayers; and some of them did not set a limit,
rather they left that to be decided by custom (al-‘urf) – what is
customarily regarded by the people as travelling is where the concession is
granted allowing the traveller to shorten his prayers and break his fast.
According to the
majority of scholars, the distance is defined as being approximately eighty
It says in Fataawa al-Lajnah al-Daa’imah (8/99): The
distance in which the concession of traveling is allowed is that which is
customarily regarded as travelling, which is approximately eighty
kilometers. Whoever is going to travel this distance or more is allowed to
avail himself of the concessions granted to travellers, namely wiping over
the socks for three days and nights, and joining and shortening prayers, and
not fasting in Ramadaan. If this traveller intends to stay in a place for
more than four days, then he is not allowed the concession of travel. If he
intends to stay for four days or less, then he is allowed that concession.
The traveller who stays in a place and does not know when he will finish
what he came to do or how long he will be staying may avail himself of the
concessions granted to the traveller, even if that is for a long time. And
there is no difference between travel by land or by sea.
From this it is known that you are not allowed to shorten your prayers for the distance mentioned, because it is not equal to the distance of traveling.
And Allaah knows best.