Genesis 50:11, Beyond the Jordan. Beyond is the Hebrew word eber meaning “across.” This was the roundabout way of reaching Machpelah.
The Jewish and Christian commentaries I have studied don’t give a good reason for Jacob’s burial entourage taking this most indirect route to the burial cave of the patriarchs.
It’s possible that Jacob was, out of faith in the promises of Elohim, prophetically tracing the steps his descendants would take several generations later in entering the Promised Land. It’s almost as if Jacob was showing the future generations of Israelites the route he wanted them to take from Egypt to the Promised Land to fulfill biblical types and shadows.