The Running Pace Calculator is a convenient Chrome extension designed to help runners estimate their marathon completion times based on their training and recent race performances. This tool allows users to input their desired finish time and instantly see the corresponding pace required to achieve that goal.

With its straightforward interface, the extension is user-friendly and accessible for all levels of runners. It serves as an excellent resource for those looking to optimize their training regimen and track their progress towards marathon readiness. The free add-on simplifies the process of calculating running paces, making it a valuable addition to any runner's toolkit.