Marathon
Pace your Seoul Marathon
Seoul Marathon Pace Calculator — build marathon splits from your goal time and the real course elevation.
Sun, Mar 21, 2027
Course profile
- Distance
- 42.2km
- Gain
- ↑ 75m
- Loss
- ↓ 100m
- Steepest km
- +1.4%
Set a goal time to build your splits
- Splits shaped by the course's climbs and descents
- Even, negative, or positive split strategies
- Send the plan straight to your watch
Course notes
How to pace the Seoul Marathon
Seoul is a fast point-to-point with a slight net downhill, run in cool March conditions and finishing with a lap of the Jamsil Olympic Stadium.
The course is largely flat, with only minor dips through underpasses along the Cheonggyecheon stream and the Han River. Nothing on the profile forces a slowdown.
This is an even or negative-split course. Hold goal pace from 5 km and use the flat, slightly downhill final kilometres and the stadium finish to close strong.
Set a goal finish time above and the calculator builds a split plan for this course, grade-adjusted from its elevation profile. New to pacing? Read the pacing strategy guide.
FAQ
Seoul Marathon pacing FAQ
Is the Seoul Marathon fast?
Yes. Seoul is a flat, point-to-point course with a slight net elevation loss, run in cool spring weather, and it consistently produces fast times and personal bests.
Where does the Seoul Marathon finish?
Inside the Jamsil Olympic Stadium, with a short lap of the track to the line. The approach is flat, so you can hold or lift your pace into the finish.
How do I calculate marathon splits?
Choose a marathon course or distance, enter your goal finish time, select kilometers or miles, and generate a split-by-split pacing plan.
Should marathon pace change on hills?
A hill-adjusted plan usually slows the target pace on climbs and allows faster splits on descents so the effort stays more even across the course.
What is an elevation-adjusted pace plan?
An elevation-adjusted pace plan uses the course profile to distribute effort by split instead of assuming the same pace for every kilometer or mile. The goal is to slow slightly on climbs, recover time on descents, and still hit your target finish time.
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