We have disclosed systems and methods for portable performance monitoring of an individual during a physical activity. The systems and methods may include a personal computer configured to receive personal data from the individual. The systems and methods may also include a portable performance monitoring device that may be in communication with the personal computer and may have a display screen configured to display the personal data to the individual. The systems and methods may also include a server that may be in communication with the personal computer and the portable performance monitoring device and may have a database configured to store the personal data The systems and methods may be configured such that the personal data displayed on the display screen of the portable performance monitoring device and stored on the database of the server is configured to update based on the personal data received on the personal computer.