There are two main methods for developing speed in athletes: acceleration runs and pace runs. Both methods involve three phases - acceleration, racing, and deceleration. The acceleration run method focuses on the acceleration phase, emphasizing a quick gain of maximum speed followed by deceleration. The pace run method focuses on maintaining a consistent racing pace, and can involve maintaining different paces. Both methods provide advantages for skill development and understanding one's running, but require proper rest, surfaces, and planning to prevent injury.