Calf soreness like cramps, the possible causes of over fatigue, muscle strain, lumbar disc herniation. 1. Overfatigue: Calf pain like cramps, may be usually too long exercise, or long time weight-bearing activities, resulting in excessive fatigue of the calf muscles caused by. 2. Muscle strain: usually in the process of exercise, if the calf is over-exerted or improper posture, it may lead to calf muscle strain, resulting in calf soreness like cramps. 3. Herniated lumbar disc: Calf pain like cramps may also be caused by a herniated lumbar disc compressing local nerves. Calf pain like cramps may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.