Techum

1. It is forbidden to walk beyond the Techum on Shabbat. In general, the techum is a 2000 Amot boundary beginning from 4 amot area around a person.Some hold that walking beyond 12 mil on shabbat is a Biblical prohibition, while others consider it a rabbinic prohibition.

Walking to the edge of the Techum

1. it is forbidden to walk to the edge of the Techum in order to leave on a journey quickly after Shabbat. However, if the action one is going to do after Shabbat could theoretically have been done on Shabbat, it is not forbidden to walk tot the edge of the Techum waiting for the end of Shabbat. For example, one may walk to the edge of the Techum in order to bring one's animal back because theoretically one could have done this on Shabbat if there were houses extending the Techum. Also one may walk to the edge of the Techum in order to collect fruit which fell before Shabbat and aren't Muktzeh because theoretically one could have done so on Shabbat if there were walls surrounding the path (which would permit carrying on Shabbat).
2. One may walk to one's garden within the Techum in order to pick fruit after Shabbat since it is not evident that one is walking there for that purpose.