# Endurance > *"How long can I keep going?"* Endurance is the unglamorous skill of still going when going has stopped being reasonable. The body's slow burn that keeps turning over long after the fuel should have run dry. It covers sustained effort across time and distance. The march that does not end, the open water, the grinding labor, the cold or heat or thin air that wears everyone else down to nothing. A Fell with Endurance runs on a different clock and keeps finding road past the point the body swore was the last of it. Speed wins the moment. Endurance wins the week. Most campaigns are decided by the week. > [!note] Example Skill Checks > > - March through the night without losing pace or accumulating debilitating fatigue. > - Swim across open water, through a current, or under sustained pressure without faltering. > - Survive harsh environmental conditions: extreme cold, heat, altitude, or prolonged exposure. > - Hold a position, sustain a physical effort, or keep working long after others have stopped. > - Resist exhaustion during prolonged combat, labor, or a journey that has pushed past its limits.