Join Run This

Tools

Running tools that make decisions clearer.

Pace, predict, split, fuel and sense-check training load before the plan goes off the rails.

Performance lab

Numbers should simplify the run.

Choose one tool, enter what you know, then use the answer as guidance—not a target to force on every session.

Runner preparing for a focused track session

Pace calculator

Use this to understand what your goal time really means before race day: pace per kilometre, pace per mile and average speed.

Examples: 5 for 5K, 10 for 10K, 21.1 for a half marathon, 42.2 for a marathon.
Match this pace to a training plan

Race time predictor

Use a recent race result to estimate another distance. Prediction is guidance, not a guarantee. Weather, course, training and fuelling matter.

Find a race to test it

Split calculator

Break a goal time into even splits so the race feels less abstract.

Open pace chart

Fuelling calculator

Estimate race fuel so you practise the plan before race day.

Read long-run fuelling guide

Training load check

Compare this week to last week. Big jumps are where good intentions become injuries.

Use the recovery system