The Mount Shasta Tinman Triathlon is an icon for California which has been a major fundraiser for Dunsmuir Rotary Club, and one of the most enjoyable triathlons in northern California for decades. Returning for years to come, the Tinman is now on a mission to partner with Rotary's critical passion of ensuring children have their meal needs met through the weekend, not just while they are at school. A portion of your registration will be donated to the Dunsmuir Rotary Club as they work with Wildcat Weekender, accomplishing their mission to feed the children who would otherwise not have enough food on the weekends. Details of your adventure, cheered by the majestic view of Mt. Shasta include: Race Date- September 6, 2026; First Wave 8am Registration: Early Bird through December 31Individual $116Relay $156 Regular Registration January 1-July 15Individual $141Relay $211 Late Registration July 16-August 27 @ 2pm PST Individual $168Team $237 *Duathlon and Triathlon are the same prices No guarantee of t-shirt if registering after August 10. Distance: Swim 740 yards, Bike 16 miles, Run 3.2 miles Course Information: (Note: Duathlon is Run 3.2 mi, Bike 16.67 mi, Run 3.2 mi) The swim begins at the Lake Siskiyou Beach and Splash Zone. (Note: Duathlon- Run begins at Lake Siskiyou Beach and Splash Zone. After the first run, the same directions (below) as the Triathlon apply) See the bike course in the course maps section of the website. The run takes place heading east from the beach, on the trail along the water. Directions: The Tinman takes place Sunday of Labor Day weekend at Lake Siskiyou Camp resort 3 miles SW of the central Mount Shasta exit (Interstate 5).
Races Offered
Collegiate Teams
Sep 06, 2026
straighten
Distance —
Collegiate Teams
terrain
Type —
Multisports
timer
07:29
sell
$116.00
Individual Duathlon
Sep 06, 2026
straighten
Distance —
Individual Duathlon
terrain
Type —
Multisports
timer
07:29
sell
$173.00
Individual Triathlon Sprint
Sep 06, 2026
straighten
Distance —
0.8K Swim 20K Bike 5K Run
terrain
Type —
Multisports
timer
07:29
sell
$173.00
Weather History
These values represent the 3-year monthly averages for September in Mount Shasta.
thermostatTemperature
-7.0° / 2.5°
wb_sunnyFeels like
-11.3° / -2.5°
light_mode
Avg sunshine hours
11h 7m
water_drop
Avg rainfall
1.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
6.0 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
49.0%
wb_twilight
Sunrise
06:49
nightlight
Sunset
19:16
About Mount Shasta
Learn more about the host city, Mount Shasta.
Mount Shasta is an incorporated town in Siskiyou County in the Shasta Cascades region of California, at the southwestern foot of Mt. Shasta.