125ccm machine better suitable for short distances

Hello community I’ve been asking Ne who’s been busy for a long time. I’ve heard that a 125cc machine is better suited for short distances (15 to 20km) (because of consumption etc) like a large machine xxx -cc. ? How about it now that you’re not so the scooter type , and now just as bsp , not your big machine (if you have one ) or your car doesn’t want to use because you find motorcycle riding better . Or a student or azubi who just has the a2 My question is now if it would be worth buying any 125 machine (zb yamaha wr 125 x) for this track or yet a larger machine. A 50 scooter is rather bad since the track is mostly about land. (I know what I’m talking about, because across country with a 50 scooter is not a sugar slug). I would like to know your opinion on this topic, and would like to wuss And I apologize in advance to those who consider this question pointless. And a thank you to those who answer me mfg tooyotal