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Triathlon Calendar near Mount Shasta 2025-2026

Explore the top triathlon near Mount Shasta for 2025-2026! We've gathered 1 exciting races in the area. Check out our detailed list below to find your next local race.

September 2026
Race a scenic sprint tri at Lake Siskiyou in Mount Shasta on Labor Day weekend, with a short swim, 16 mile bike and 3.2 mile run. Open to individuals, relays and duathletes, the event supports Dunsmuir Rotary and local kids.