Incorrect number of kilometers

Good morning

I am creating a route in Kuviger. When I export that route to my Zumo XT 2, I see the route displayed correctly. It is a route of 323 kilometers. On my Zumo, it shows ..40401..kilometers. But the time indicates 6 hours 14 minutes. This problem occurs frequently. Can you tell me what I am doing wrong, or is this a system error?

Kind regards, Rob van Dijk