Long range electric bikes
The range of an electric bike depends essentially on four variables - (remaining) battery capacity, rider weight, terrain complexity and level of assistance. However, every e-bike allows you to continue driving even after the battery has been discharged, as on a normal bike.The smallest range has a folding e-bike where the low weight is the main goal. For example, the biggest power and long range have a mountain e-bike and some trekking with more battery capacity.
If you need a larger range with electric assist than the approximately 100 km, you can, of course, let the bike charge (50% of the capacity is charged for about 1 hour), or you can buy a spare battery and double the trip.