Get to the point
The whole point is to say, “so I don’t have any groceries in the house yet.”
Nobody really cares if the race I’m planning to run in Northampton, which therefore means I can do my grocery shopping at the co-op there in a combined trip, which is why I haven’t bought groceries yet (aside from the total lack of time), is actually 5K or in fact some tenths of a mile longer, as has been alleged.
But I get caught up in all those subordinate clauses and never reach the point.