It is not generally recommended to ride llamas, except for small children. An adult male will reach a weight of between 300 and 450 pounds and stand 5 to 6 feet tall. They are able to carry approximately 25% of their body weight, so a rider or load of 75-115 lbs. should be fine. As they reach top physical conditioning, this weight may be increased to a maximum of 33% of their body weight.