Pacer 10K is an eight-week program designed for seasoned runners who want to improve their 10K speed and burn more calories. The app combines running and speed intervals to gradually build stamina and strength. The program consists of three runs per week, each of which includes walking, running, and faster running intervals. The routine is designed to make running more interesting and fun, and on the eighth week, runners can expect to run a faster 10K.

The app is built with GPS and distance tracking, which works even when the app is running in the background. It is also integrated with Apple Health for calorie calculation and saving workouts. Pacer 10K has an audio coach that guides users on when to walk, run, or run faster. The coach starts slow and gradually speeds up, making it easy for users to follow. Additionally, users can listen to their music while running, with the coach's voice blending in when needed. The app also has on-screen controls for Apple music app users. Pacer 10K is compatible with all running GPS apps, including Nike+, RunKeeper, and MapMyRun. Users can also earn wins and badges, share their progress on social media, and meet other trainees on the Facebook community.