Everyone has two eyes and a thumb that can be used to estimate distance when markers are too far apart to measure accurately with a tape measure. Knowing how to estimate the distance between two points can be useful for a variety of tasks such as setting up tents and measuring yards on a football field. Here is how to estimate distances using your thumb and eyes:
Keep in mind that this method is only an estimation and will likely vary depending on the size of the person's stride as well as how far away they are from their target point. Additionally, if the area is hilly, there may be irregularities in the terrain which can throw off your estimation.