서울마라톤 takes place on Sun, Mar 21, 2027 in Seoul, South Korea. The main route is 42.2 km.
- Date
- Sun, Mar 21, 2027
- Start
- Seoul 🇰🇷
- Distance
- 42.2 km
- Level
- Open to all
Your 24-week plan to 서울마라톤
The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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Seoul Marathon is a prestigious World Athletics Platinum Label road race featuring a flat course starting at Gwanghwamun Square and finishing at Jamsil Olympic Stadium.
What this race demands
The Seoul Marathon demands sustained aerobic endurance across a 42.2-kilometer flat road course in March. Athletes must maintain pacing discipline over the standard marathon distance.
Aerobic Capacity
Covering the full 42.2-kilometer distance requires a high level of cardiovascular efficiency and running economy to sustain forward momentum.
Muscular Durability
The continuous pounding of a road marathon over several hours places significant repetitive stress on the lower limbs, requiring strong structural resilience.
Aim for 60 to 90 grams of carbohydrates per hour to sustain energy stores throughout the duration of the marathon.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
3:45–4:30
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at 서울마라톤 is 24 weeks away. This is how a coach divides that time. The first phase starts now.
01Base12 weeks · Oct 5, 2026 – Dec 27, 2026
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Dec 28, 2026 – Feb 7, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Feb 8, 2027 – Feb 28, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Mar 1, 2027 – Mar 14, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Mar 15, 2027 – Mar 21, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is 서울마라톤?
서울마라톤 takes place on Sun, Mar 21, 2027 in Seoul, South Korea.
How long is 서울마라톤?
The main route is 42.2 km.
What does 서울마라톤 demand?
The Seoul Marathon demands sustained aerobic endurance across a 42.2-kilometer flat road course in March. Athletes must maintain pacing discipline over the standard marathon distance.
Who is 서울마라톤 for?
서울마라톤 is open to all participants.
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