2026 DEKA FIT & Ultra - Chicago, IL

Official Spartan/DEKA event page for 2026 DEKA FIT & Ultra - Chicago, IL, an amateur-enterable individual obstacle racing / functional fitness event at Navy Pier, Chicago, IL. Importance evidence: official Spartan Race/DEKA calendar and official published event page; Spartan/Tough Mudder/DEKA are major mass-participation OCR and fitness event series.