Is UTC for marathon runners as well?

Yes as long as you expect to finish in 5 hours or less.

We have following athlete profiles, so just select your appropriate profile.

Level 5: >4:30

Level 4:   3:45 to 4:30

Level 3:  3:15 to 3:45

Level 2:  2:45 to 3:15

Level 1:  2:20 to 2:45

We would expect marathon runners to be able to run up to 6 hours per week in high-volume weeks.