Route:Cheonjinhang Port (start, 0.0 km) - puddle for cattle (0.8) - west Cheonjindong (1.4) - Coral Beach (2.2) - intersection in Obang-ri (4.4) - signal fire place (5.8) - Hagosudong Beach (7.7) - entrance of Biyangdo (8.7) - Yeongil-dong Joil-ri (11.8) - Geommeolle Beach (12.7) - Mangdongsan (13.6) - poppy field (13.9) - peak of Udobong (14.3) - entrance of Dolkani (15.4) - Cheonjinhang Port (15.9 km, finish)
----Course takes about five hours to complete
Grade: 36.5 (18th overall)
Natural scenery and landscape
Conditions of the trail
Environmental damage / lack of footprint on the area
Crowd control / compared to how many people are using trail
Strengths:The three things that stand out are Someori Oreum, Udo Lighthouse Park and Coral Beach. The best views of Udo and looking west toward Jeju are at the peak of Someori, which happens to encapsulate the park. The oldest lighthouse, first used in May 1906, has been restored; other features in the park are interactive and unique. Horses mosey about the oreum. Also special is the feel of Coral Beach’s white sand because its popcorn-like quality is unlike any other on Jeju’s shores.
Weaknesses:The course markers on Udo seem to be problematic in parts, perhaps due to overuse. Tourism numbers continue to climb for visits to the island, which reduces reflective time for individuals and small groups during peak season.
English learning opportunities:Udo Island main sign, Coral Beach, Dreong Koji, Tolkani, Udo Lighthouse Park (multiple)
Quotable:“Udo’s Olle trail [No.] 1-1 is a microcosm of the  other trails in Jeju, just as its unique ecology is the miniaturized presentation of Jeju’s natural heritages.”--Jean K.Min, Jeju Weekly
ⓒ Jeju Weekly 2009 (http://www.jejuweekly.com)
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