Challenge Gunsan-Saemangeum 2027
A middle-distance triathlon at Gunsan: a two-lap swim at Bieung Beach, a four-lap bike on the Saemangeum seawall and a four-lap coastal run.
34 weeks to race day: base season
Plenty of runway. This far out, the win is a boring, consistent base rhythm: aerobic volume, strength, technique. The structured block starts closer in; what you do now decides how high it can climb.
Building for this one? 70.3 training plan covers the sessions, the weekly shape and how the block is paced. The R.A.C.E. Framework explains why it is built that way.
Build my complete road.
Commit to the date and the work gets a shape: your countdown starts, the emails arrive in step with your build, and the app anchors a recovery-led block so the final week lands exactly on race day.
One confirmation email, then the road begins. Registering for the race itself stays with the organiser.
“The bike is four laps on the Saemangeum seawall, which is exposed, and the run is four coastal laps, so plan for wind and for fuelling around the loops.”
The race
The course
Two laps at Bieung Beach; the run from the swim exit to transition is about 500 m.
Four laps on the Saemangeum seawall.
Four coastal laps at Bieung Port.
Not yet confirmed for this edition: bike elevation gain, cut-off times, wetsuit rules, aid station spacing, water temperature history, course maps (not checked against official GPX). We publish these only once they are on the official course page, so check there before you pace off anything here.
Course details verified against the official Challenge Gunsan-Saemangeum course page on 4 October 2026. Courses change; the official page is always the last word.
Questions, answered
When is Challenge Gunsan-Saemangeum 2027?
What distances can I race at Challenge Gunsan-Saemangeum?
How hard is the course?
What is the swim like?
How long do I need to train for it?
How do I enter?
Read before you race
Half Ironman Recovery Time: A Practical Return
How Much Harder Is a Full IRONMAN Than a 70.3?
IRONMAN 70.3 Tallinn Training Guide
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This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by Challenge Gunsan-Saemangeum or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and entry, always use the official event website.