Calculating distance without direction-list

I want to calculate the distance between two locations (Delphi).

aRoute:=Map.ActiveRoute;
aRoute.Waypoints.Add(aFromLocation,'');
aRoute.Waypoints.Add(aToLocation,'');
aRoute.Calculate;

Every time the direction list appears and the route is shown on the
map. Does anybody know if its possible to calculate a route
without direction-list and map-visualization ?

Thanks
Rainer