A sore throat after running 800 meters can generally be relieved by resting, if the running process after contact with allergens such as pollen throat discomfort, then you can take medication to treat, if it is too cold environment after running symptoms of sore throat, then need to consider the laryngitis and other diseases caused by. 1. If the symptoms of sore throat appear immediately after running 800 meters, it may be due to the sympathetic nerves are too excited when running, resulting in breathing too fast, the air flow through the throat too fast, stimulating the mucous membrane of the throat caused by pain, this situation is generally rested after drinking moderate amount of water can be relieved, without special treatment. 2. After running 800 meters, if it is after a while before the symptoms of sore throat, then it may be due to the running process, the patient contact with pollen and other allergens, the occurrence of tracheal mucosal edema, which led to the sore throat, this situation can be prescribed to take loratadine and other drugs for treatment. 3. If in the cold environment after running 800 meters, after 1 ~ 2 genius throat symptoms, then the patient may be cold after the occurrence of laryngitis and other diseases caused by this situation need to pay attention to cold warmth, drink more water, but also discretionary use of amoxicillin, dexamethasone, amoxicillin, and other drugs as prescribed by the doctor for treatment. If you have a sore throat after running 800 meters, if the symptoms are not significantly relieved, it is recommended to seek medical attention.