Running Tools

Sort out your pace, distance, splits and goal time—then go run.

Pace and performance

Pace · Time · Distance

Running Pace Calculator

Choose any two values to find the third, with min/km, min/mile, speed, 400m splits and common race projections.

Start calculating → Race splits · Pace band

Race Split & Pace-Band Planner

Enter a goal time, choose even, conservative-start or negative-split pacing, allow for stops, and print the plan.

Plan race splits → Track training

Track Split Calculator

Enter a min/km pace to see target times for 200m, 400m, 800m, 1200m and 1600m.

Calculate track splits → Track lanes

Track Lane Pace Calculator

Select lane 1–9 and convert between a same-line full-lap time and min/km pace.

Convert a lane lap → World Marathon Majors

WMM Finish-Time Predictor

Use a completed Major to estimate a realistic goal-time range and min/km pace for your next one.

Predict a goal time → Race equivalents

Race Time Predictor

Turn a recent result into equivalent times at other distances, then make a split plan.

Explore → Training

Training Pace Calculator

Find E, M, T, I and R pace references from a recent result. Give each run a purpose.

Explore → Taiwan race data

Taipei Marathon Percentile Calculator

Compare your time with 8,278 Taipei 2025 finishers and explore percentile targets.

Explore →