I bought 2 GoKart Pro's 3 years ago. My junior (6 years, 25 KG) drives in the fastest mode for about 45 minutes. But then he really drives for 45 minutes in "Max Verstappen mode". It's difficult to convert this into KM, but I think the kart can do around 12-15 KM in the fastest mode. We have already driven over 1000km with both karts and apart from several new rear tyres (drifting is fun) there have been no problems with either kart so far. When I drive (72 KG) the battery is flat faster. It depends on the weight of the person and the driving style. Would I buy the Segways again? Definitely! The only disadvantage is the procurement of accessories and spare parts (tyres etc.). You have to go to Ali for that. Maybe Galaxus will add the most important things to its range at some point, especially tyres.