The weight of a Spartan spear, also known as a "dory," can vary depending on the specific design, length, and materials used. However, historically, Spartan spears were typically lightweight and designed for ease of use in battle.

A typical Spartan spear, which had a shaft made of ash wood and a leaf-shaped iron spearhead, would weigh around 2-3 pounds (0.9-1.4 kilograms). The length of a Spartan spear could range from around 6 to 9 feet (1.8 to 2.7 meters), allowing for effective thrusting attacks from a distance.

The relatively light weight of the Spartan spear made it maneuverable and versatile in combat, allowing soldiers to wield it effectively with one hand or use it in conjunction with a shield. The design of the spearhead and the balanced distribution of weight along the shaft contributed to its ease of use and effectiveness on the battlefield.

It's important to note that the specific weight of a Spartan spear may vary based on historical period, regional variations, or individual craftsmanship.