NDUNDU
PricingCalculatorsGuidesSign inStart free trial

Training plans: running, trail and triathlon

Pick your sport, your distance or your actual race: Endu generates the full plan structure — phases, volume, sessions — that you can personalise in 3 minutes.

Running

From 5K to the marathon, on the road.

4 distances94 races
5K10KHalf marathonMarathon
By race

Trail & ultra

From short trail to 170K ultras, with elevation at the heart of the plan.

5 distances116 races
20K trail40K trail80K ultra100K ultra
By race

Swimrun

Swim / run transitions, gear and pacing.

3 distances27 races
Sprint swimrunSwimrunLong swimrun
By race

Triathlon

Sprint to Ironman, three disciplines coordinated.

4 distances56 races
Sprint triathlonOlympic triathlonHalf IronmanIronman
By race

Calculators

Free, no sign-up. Everything is computed in your browser: nothing you type here is sent anywhere.

VMA calculatorTraining pace calculatorRace time predictorEffort-kilometre calculatorHeart rate zone calculatorCSS calculator (critical swim speed)FTP and power zone calculatorTriathlon time calculatorRace fuelling calculator
NDU

Smart training plans

Training

  • Training plans
  • Guides
  • Pricing

Calculators

  • vVO2max calculator
  • Training pace calculator
  • Trail effort-km
  • Race fuelling plan
  • All calculators

Legal

  • Terms
  • Privacy
  • Legal notice
© 2026 Endu