declare @maxi int, @curri int
select @curri = 0, @maxi = max(id) from #zips
while (@curri < @maxi )
	update #zips
	set @curri = id, nearest = acos((sin(radians(lat1)) * sin(radians(lat2))) +
					(cos(radians(lat1)) * cos(radians(lat2)) *
					cos(radians(long1)-radians(long2)))) * 69 * 
					( 180 / PI())
	where id <= @curri + 10000