Its normal to planning a route with a distance of a whole tank. Frequently with 2 or 3 refuelings.
For exemple, my aircraft fly just 3h at 80 knt, but the max zoom-out level is only 60 NM.
Not possible to see the complete route.
in case of bed weather is not easy to divert to a completely alternate route and visualizing she completely.
Zoom out more, would be helpful.
Would be great to overlay a weather/wind forecast/report.