Seoul 100K 20K 2026
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An individual trail race at Yukjo Madang, Gwanghwamun Square. 2026 course distance, ascent and time limit. Even the 20K requires a qualifying ITRA/UTMB race within the stated two-year window; a shorter distance does not mean unrestricted entry.
1,236 m of climbing over 23 km (54 m per km).
Estimate your finish from your ITRA index
Estimate (no finisher data for this race)
How the prediction works
Enter your ITRA performance index to get an estimated finish time, aid-station splits and cutoff margins. This race has no finisher ITRA data, so it uses the transfer model: your predictions for the 291 races that do have finisher data, scaled by distance and elevation gain (km-effort) — the same calculation as the TRAIL STATUS app. Nothing is saved automatically or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Sat, 19 Sep 2026
- Start
- 07:30
- Location
- South Korea
- Distance
- 22.7 km
- Elevation gain
- 1,236 m
- Time limit
- 8h
- Official website
- en.seoul100k.com/62
Elevation profile
No elevation data yet.
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| F | 22.7 km | FINISH | 22.7 km | 15:308h |
The small figure under each cutoff is the time from the start.
Other races
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- TransJeju 100M (Jeju, Korea) 2026Fri, 2 Oct 2026 · South Korea · 148 km
- TransJeju 60K (Jeju, Korea) 2026Sat, 3 Oct 2026 · South Korea · 60 km
- TransJeju 20K (Jeju, Korea) 2026Sat, 3 Oct 2026 · South Korea · 20 km
- UTGD Skyrace 42 Sky Marathon 2026Sun, 14 Jun 2026 · South Korea · 42.2 km
- ULJU TRAIL NINE PEAKS 9 PEAKS 125K (Ulju, Korea) 2026Fri, 30 Oct 2026 · South Korea · 124.9 km
From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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Points to consider for this course
- The overall time limit allows about 21:09/km including stops. This average does not guarantee meeting intermediate cutoffs.
- No intermediate points are recorded, so the longest gap is not calculated. Check the official aid list for fueling intervals.
- The profile is missing or estimated. Check the official course map for climb locations and steep sections.
These are simple calculations and observations from recorded information, not personal finish probabilities or difficulty ratings.
Results and official information
Historical field finish rates differ from your personal prediction. This is not a live results service; check official announcements for results and changes.
Check rules and results on the official siteInformation checked: 2026-11-06