Lost Our Marbles
North Central, Canada • 29 Nov 2025
Lost Our Marbles is an indoor ultra marathon held in Regina, Saskatchewan, Canada, at 1717 Elphinstone Street. Now in its second year, the event offers three timed challenges: 3, 6, and 12 hours, allowing participants to test their endurance over varying durations. The unique lap-tracking system uses marbles—runners deposit one marble per completed lap into their personal tin, which is counted at the end to determine total distance.
The event is self-supported with no aid stations, but water fountains, clean change rooms, and washrooms are available. A designated rest area with chairs is located near the track. Participants also enjoy a fun guessing game with prizes and receive commemorative items.
Proceeds support the CMHA Regina Branch. Visit the organization's website for the most recent information.