Free resources
MTB Training Tools
Free calculators built for junior mountain bike racers and their parents. No sign-in required, results appear instantly, and every plan link is shareable.
Heart Rate Zone Calculator
Find your 5 heart rate training zones from your age and resting HR. Highlights Zone 2 (your aerobic base) and your XC race zone. Supports the classic 220-minus-age formula and Karvonen.
Open calculator Race nutritionRace-Day Nutrition Plan
A 36-hour fuel guide for race weekend: dinner the night before, race morning breakfast, pre-race snack, on-bike fueling, and finish-line recovery. Tailored to your race category, caffeine-free.
Open calculator Race nutritionRace Fueling Calculator
Get your per-hour carb target for race day: grams per hour, gels per hour, and a feeding schedule. Built around XC race lengths with gut-training adjustments for junior athletes.
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DevoSendr builds your MTB training week around your zones, your race calendar, and your four training pillars. Free to try.
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