Jamaica is about 235 kilometers (146 miles) long from tip to tip, with a width that ranges roughly from 35 to 82 kilometers (22 to 51 miles) across its widest points. The island sits in the Caribbean Sea, located roughly 145 kilometers (about 90 miles) south of Cuba and 190–215 kilometers (about 118–135 miles) west of Hispaniola, depending on the reference point used. If you need a precise measurement for a specific point (for example, the distance between two towns or the exact length of a particular coastline segment), I can provide that with a defined start and end point.