Run Calculator app for iPhone and iPad

Run Calculator is a set of powerful, fast, and easy to use tools for doing all sorts of running calculations.

Time-Distance-Pace Calculator
A quick and easy to use tool for solving common pace calculations. Use it to answer questions like:
I ran a 10K in 50 minutes. What was my pace? (8:03 per mile)
I think I can run 7 minute miles for 13.1 miles. What would my time be? (1:31:42)
I need to run for 30 minutes at 8 minutes per mile. How far would that be? (3.75 miles)

Pace Calculator
Enter a time and distance to set your pace. The Pace Calculator will then calculate your time at any other distance, assuming your pace is fixed. For example, if you want to run a 5K in 20 minutes, your mile time would be 6:26, and your 400 meter time would be 1:36. The Pace Calculator comes loaded with many common race distances, but it also gives you the flexibility to enter any custom distance.

Race Splits
Use this to calculate your split times for a race. It comes loaded with three common split distances (1 mile, 1 km, and 400 meters), and allows you to enter your own custom split distances. It also allows you to email your splits to yourself or your friends.

Performance Prediction
Ever wondered how long it would take you to run a Marathon? You could run one and see, or better yet, just use the performance predictor in this app. It compares your running performance against current running world records in order to predict your theoretical finish time at any distance. For example, if at maximum effort you can run one mile in 5:35, you could theoretically run a 5K in 18:57 (at a 6:06 per mile pace), or a Marathon in 3:05:37 (at a 7:05 per mile pace). Your predicted performances are plotted along with world record performances on a graph. Just hit the “Me” button to enter your best performance at any distance and the white line on the graph is automatically updated to show your predicted speeds.

FEATURES:
•Quickly switch distance units between miles, kilometers, meters, or yards.
•Quickly switch pace units between time per mile, time per kilometer, miles per hour, or kilometers per hour.
•The best and fastest user interface of any pace calculator. No need to enter data in five different places or scroll four different wheels just to enter your time. If your time is 1:08:22, simply type “10822”.
•Compare yourself to running world records.
•The list of distances in the Pace Calculator is fully customizable. Add, delete, and rearrange distances as you wish.