How far will 1000 lumens shine?

Can you clarify the context of the question "How far will 1000 lumens shine?"? Lumens are a measure of luminous flux, which is the total quantity of visible light emitted by a source per unit time. The distance that light can shine depends on several factors, including the intensity of the light source, the presence of any obstacles or absorbers in the path of the light, and the sensitivity of the detector used to measure the light. Without more specific information about the setup and conditions, it's difficult to give a definitive answer to your question. However, in general, a light source with a higher luminous flux, such as 1000 lumens, will be able to shine further and illuminate a larger area than a light source with a lower luminous flux.