I’ve done some rough calculations on the real world fuel consumption of my CTX200. Most of my riding is done at an average speed of 50-60kmph on dirt trails/farm lanes using 91 octane BP petrol. I regularly get around 200km before having to switch to the reserve tank. I haven’t run the reserve tank dry, so the reserve and total range figures are estimates.
200km on 6.7L main tank = 3.35L per 100km = 1L = 29.85km.