01·Course Characteristics
Prepare for a screamingly fast net-downhill bike and flat run, drastically countered by searing mid-August heat reaching 36°C and continuous, leg-sapping rollers.
There's still hope!
The ideal build for this course is 16 weeks, and you have 5. We'll compress the essentials into your remaining time, prioritizing the demands that matter most on this course to get you to the finish line.
02·Course by Section
A single-loop rectangular swim in the pristine, glassy waters of Whiskeytown Lake. Expect calm conditions with virtually no currents, but be prepared for a warm water temperature right on the 24.5°C wetsuit-legal limit.
A scenic point-to-point route starting in the mountains and winding down to the valley. The course is characterized by smooth pavement and punchy, continuous rollers with nearly 305 meters of net elevation loss, completely exposed to the sun.
A flat, fast-paced run along the concrete and asphalt Sacramento River Trail, crossing the iconic Sundial Bridge. The route features very minimal shade, leaving you highly exposed to the direct and intense afternoon sun.
03·Training Timeline
This 16-week structured plan is tailored to guide you from a modest baseline to the Redding finish line. It front-loads basic aerobic capacity and strength to conquer the rolling bike terrain, before shifting to critical heat-adaptation training and high-volume hydration strategies to withstand the intense 36°C climate.
Aerobic Foundation
Build a strong aerobic capacity and comfortable swimming endurance.
Strength & Rolling Power
Develop muscular endurance to handle the continuous punchy rollers on the bike course.
Race-Specific Build & Heat
Introduce heat acclimatization and practice high-volume liquid fueling protocols.
Taper & Sharpen
Reduce training volume while keeping intensity high to peak on race day.
Adapts to your fitness, schedule & recovery every week.
Personalize this timeline04·Race-Day Execution
Anticipate intense heat peaking near 36°C with 23% humidity. Aggressively utilize ice, wet sponges, and cold water at every run aid station to lower your core body temperature before heat exhaustion sets in.
With dry air rapidly evaporating sweat, target a high fluid intake of 800–1000 ml per hour on the bike. Combine this with 800–1200 mg of sodium hourly, prioritizing liquid nutrition or easily digestible gels as heat diverts blood from your stomach.
Use the bike course's net-downhill profile to save energy, holding back on the punchy rollers to avoid pre-cooking your legs. On the flat, highly exposed run, pace conservatively early on to survive the intense sun.
Pack both a wetsuit and a swimskin due to the borderline 24.4°C water temperature. Redding has a split transition, so plan extra time on Friday and Saturday to manage gear bags at T1 (Whiskeytown Lake) and T2 (downtown).
Your Personalized Plan
FE26 builds your plan around your Strava data, your real schedule, and the exact demands of IRONMAN 70.3 Northern California — then adapts every week to how you actually perform.
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