Highest salary at Marathon in year 2022 was $104,798. Number of employees at Marathon in year 2022 was 14. Average annual salary was $49,553 and median salary was $50,951. Marathon average salary is 6 percent higher than USA average and median salary is 17 percent higher than USA median salary. From 2021 to 2022, the average salary of employees at this employer increased 2.3 percent, the median salary increased 3.2 percent.