A tennis match can vary widely in length depending on the format, players, and circumstances. On average:

• Best-of-three set matches typically last about 90 minutes, but can range from 1.5 to 3.5 hours.
• Best-of-five set matches, like those in men's Grand Slam events, usually last between 2 to 5 hours.
• Women's matches, generally best-of-three sets, tend to last between 1.5 to 3 hours.
• Doubles matches are usually shorter, often lasting around 2 hours.

The length can be influenced by many factors including the style of play, court surface, weather conditions, and how competitive the match is. Some matches can be very short, around 20-30 minutes for very one-sided sets, while others can become marathons lasting several hours. The longest professional tennis match on record lasted 11 hours and 5 minutes over three days (John Isner vs. Nicolas Mahut, 2010 Wimbledon). Typically, a single set lasts between 30 minutes to an hour, with additional time for breaks between games and sets adding to the total match duration. In summary, a tennis match usually ranges from about 1.5 hours for shorter matches to 3-5 hours for longer, more competitive matches, with outliers on both ends.