2026 Lake Saroma 100km Ultra Marathon is a future Ultramarathon listed on the official AIMS member-race calendar for 2026-06-28 in Lake Saroma, Hokkaido, Japan. Importance evidence: AIMS official member-race calendar/listing for April 2026–July 2027 verifies future date, country and race distance class; selected races are city flagship/large international marathon or half-marathon events.
Date
28 juin 2026
Distance
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Elevation
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Difficulty
n/a