The maximum length a wheelchair ramp can go without a landing depends on various factors, including the slope or incline of the ramp, local building codes, and accessibility guidelines. In general, most jurisdictions recommend including a landing for every 30 inches (76 centimeters) of vertical rise. This ensures that individuals using wheelchairs or other mobility devices have a level platform to rest on and maneuver safely. However, specific regulations may vary, so it is crucial to consult local building codes or accessibility guidelines to determine the exact requirements for ramps without landings in your area.