Numbers 35:4

4 The open land around the cities you give to the L'vi'im is to commence at a line drawn around the city wall 1,500 feet outside it and is to extend outward from there.

Numbers 35:4 Meaning and Commentary

Numbers 35:4

And the suburbs of the cities which ye shall give unto the
Levites
The dimensions and bounds of them were not left to the Israelites, to give what ground they pleased for this purpose, but were fixed to what length they should be: these

[shall reach] from the walls of the city, and outward, a thousand
cubits round about;
which was half a sabbath day's journey, and pretty near half a mile, which all around a city must contain a considerable quantity of ground, if the city was of any size, as it is certain that some of them given them at least were.

Numbers 35:4 In-Context

2 "Order the people of Isra'el to give to the L'vi'im cities to live in from the heritage they will possess, and you are also to give the L'vi'im some of the open land surrounding the cities.

3 They are to have the cities to live in, while their open land will be for their livestock, for growing crops and for all their animals.

4 The open land around the cities you give to the L'vi'im is to commence at a line drawn around the city wall 1,500 feet outside it and is to extend outward from there.

5 Measure 3,000 feet outward from the city wall to the east, south, west and north, with the city in the center. The space between the 1,500-foot line and the 3,000-foot line will be their open land around the cities.

6 The cities you give to the L'vi'im are to be the six cities of refuge to which you permit the person who kills someone to flee to; plus an additional forty-two cities.