October 11–12, 2025
- Chattanooga Oktoberfest – First Horizon Pavilion
October 10 – 31, 2025
- ODDtober (oddities exhibit) – Tennessee Aquarium
October 17–19, 2025
- Chattanooga Motorcar Festival – Chattanooga Convention Center
October 19, 2025
- 7 Bridges Marathon – Coolidge Park
October 25, 2025
- Chattajack (endurance race) – Chattanooga
October 28–31, 2025
- TSSAA Girls’ Soccer State Championship – CHI Memorial Stadium
October 31, 2025
- Chattanooga Official Halloween Bar Crawl – Downtown Chattanooga
- Dread Hollow Haunted House & Escape Rooms – Ruby Falls