Pace - Ultimate run calculator

The very best, finest and most useful calculator for runners. No ads and absolutely no fee.
It'll convert pace to speed, kilometers to miles and will calculate your score in terms of any competition.
Features:
- pace/speed conversion
- kilometers/miles conversion
- calculating the duration of a competition based on pace or speed
- calculating the necessary speed for the established duration of a competition
- calculating lap times of every kilometer or mile
This is great supplement for apps like runkeeper or endomondo. Try it!