Yes, many 24 Hour Fitness locations do have saunas. However, the availability of saunas can vary from one gym to another, as not all locations are equipped with the same amenities. Generally speaking, larger 24 Hour Fitness clubs, particularly those branded as "Super Sport" or "Sport" locations, are more likely to feature saunas, sometimes alongside other relaxation amenities such as steam rooms or whirlpools.
If you're considering visiting a specific 24 Hour Fitness, it's a good idea to check their website or call the location directly to confirm whether they have a sauna and any other facilities you might be interested in using. Additionally, keep in mind that usage policies and hours of operation for these amenities might differ, so it's worth inquiring about those details as well.
Using a sauna can offer various relaxation and recovery benefits after your workout, so if that's something you're looking for, make sure to choose a location that meets your needs.