The systems and processes for handicapping a horse race using data from a past race disclosed herein enable a user to forecast the results of a horse race. The user or system selects a horse to handicap in an upcoming race, the handicapped race, and a comparable past race that the horse has run. The system then collects data from the past race and the handicapped race. After comparing data from the past race and the handicapped race, the system calculates a time adjustment to the final call time.