I quote Forced March rules;<br/><br/><strong>Forced March</strong><br/><br/>In a day of normal walking, a character walks for 8 hours. The rest of the daylight time is spent making and breaking camp, resting, and eating.<br/><br/>A character can walk for more than 8 hours in a day by making a forced march. For each hour of marching beyond 8 hours, a Constitution check (DC 10, +2 per extra hour) is required. If the check fails, the character takes 1d6 points of nonlethal damage. A character who takes any nonlethal damage from a forced march becomes fatigued. Eliminating the nonlethal damage also eliminates the fatigue. It’s possible for a character to march into unconsciousness by pushing himself too hard.<br/><br/>Now, we naturally do not walk 8 hours in training field. We are are running and according running rules a char can run one or two minutes without problems before they need rest a minute.<br/><br/>Master Taleeryn is pushing students to run much as they can before fatigue kicks in. So I ask make Constitution checks every minute of running past first minute and see how long you can keep it up.