There's a straight, mostly level 400 meter stretch of road near my house that would be nice for a cal course. But I am not going to think about establishing one on this busy road which has no shoulders.
I am thinking about laying out a cal course on the adjacent sidewalk. This is a concrete sidewalk, consisting of 5' square sections. The seams are about 3/4" across and range from ~ 1/4 to 1/2 inch deep. I don't anticipate these seams potentially creating any potential inaccuracies.
Anyone see any problem with this?