Free tools to help you run better.
Three quick tools to help you train smarter — free, no account needed. Use one or use all three; your numbers carry across between them.
Race-time predictor
One recent race or hard effort is all we need. We give you one honest number for your goal race, shown as a range rather than false precision.
Open the toolPace & zone calculator
Your easy, long, marathon, threshold and interval paces, read straight from your current fitness — each with the effort it should feel like.
Open the toolFuelling & hydration
Carbs, fluid and sodium per hour for race day, mapped to your goal pace and time on course, so race day is rehearsed rather than a gamble.
Open the toolThese are free because they’re genuinely useful. When you want the full picture, a plan and a coach are here — but the tools stand on their own.
Free tools. Real coaching when you want it.
Use a tool today. Build a full plan whenever you're ready.