A normal treadmill score is around 5 to 10. This score is based on the metabolic equivalent, or MET, which is a measure of the amount of energy used during physical activity. A higher score is indicative of better cardiovascular health and fitness levels. However, the normal range can vary depending on factors such as age, gender, and physical condition. It's best to consult with a healthcare professional to determine what is a normal treadmill score for you. According to the National Library of Medicine, the MET score can be categorized as follows: less than 5 METS is considered poor, 5–8 METS is classified as fair, 9–11 METS is regarded as good, and 12 METS or more is considered excellent.