Anything longer than a marathon covers too much ground for a street plan, so most ultras are better as a Terrain model than a City one - the hills are the story by then anyway.
The ultras routes are being built and photographed. Yours can still be made today from your own file — which is the same model, made for one person.
Upload the GPX from your watch, from Strava or from the organiser, and the engine builds an ultra model from your actual track. You see it before you pay.