Upgrade Marathon Charm through three ranks and it tops out at Marathon Runner Lv3. The first rank costs 1,500z to craft, every rank after that is an upgrade. Some of the materials only come from Chatacabra, Doshaguma, Guardian Doshaguma and two more monsters.
Rank by rank
Marathon Charm IRarity 4
Marathon Runner Lv1: Reduces continuous stamina depletion by 15%.
Craftable · 1,500zMarathon Charm IIRarity 5
Marathon Runner Lv2: Reduces continuous stamina depletion by 30%.
Upgrade from previous rank · 3,000zMarathon Charm IIIRarity 6
Marathon Runner Lv3: Reduces continuous stamina depletion by 50%.
Upgrade from previous rank · 6,000z