A way of estimating distances in Bible times. A day’s journey was about 32.2 kilometers (20 miles) but depended on such things as the mode of travel, the terrain, and the weather. Exodus 3:18, Numbers 11:31, 1 Kings 19:4, and Luke 2:44 all mention a day's journey.
Scripture also refers to a Sabbath day’s journey (Acts 1:12). A Sabbath day’s journey was probably about one kilometer (3500 feet).