A bee has to visit approximately one million flowers full of nectar to collect only 100g honey. They fly from flower to flower until their tiny honey bags are full and then take it back to their hive. Even though the load is almost 2/3 of their body weight, they fly at over 25-30km/h, depending on wind conditions.

To produce 1kg honey, they have to full fill their honey bags 150,000 times and transport it to their hive. If the flowers are about 1,5km away from their hive, they have to fly at least 3km (distance between the flowers not included). So, it takes 450,000km of flying for one bee to collect 1kg honey. That's the same as flying around the Earth about ten times.