The duration of a bouldering session can vary depending on factors such as personal fitness, climbing experience, and individual preferences. Generally, a bouldering session can last anywhere from 1 to 3 hours. This duration allows for an effective workout while avoiding excessive fatigue or overexertion. It's important to listen to your body and take breaks as needed during the session to prevent injury and maintain energy levels. Some climbers may prefer shorter, intense sessions, while others may enjoy longer sessions with more rest periods in between attempts.