This calculator allows advanced functions like just putting in a Decathalon Value and seeing the event performances or just entering in a Purdy point value to see the corresponding times and distances. Here are some specific features:

- Entering a Distance and a Purdy point value. If you enter JUST a distance and a Purdy pt. value (DON'T enter a time). You will get the predicted time for that distance and purdy pt value. EX. entering a 1 in the Distance box, and a 700 in the Purdy Point box, will give back that a 4:41 time corresponds to a 700 Purdy pt. value.
- Entering a Time and a Purdy point value. If you enter JUST a time and a Purdy pt. value (DON'T enter a distance). You will get the distance corresponding to the TIME and Purdy pt. EX. entering a time of 5:00 and a Purdy Pt. of 800 will give you a distance of 1.1186 miles. (how far you have to run in 5 minutes for an 800 Purdy pt. value)
- Entering just a Purdy point value. If you enter JUST a Purdy Point value. (NO Time AND NO Distance) you will get the standard distances and times corresponding to that Purdy Pt. value. (EX entering a Purdy Pt. value of 1100 will return close to world record times for the various distances)
- Entering Distance, Time AND a Purdy Point value will give separate predictions for Time and Distance based on the Purdy Points entered.
- Entering a Decathalon /Heptathalon value. Entering just a Decathalon or Heptathalon value will give the list of event performances corresponding to that level.
- To see a fancy plot of the latest calculator entries. Typing "logx##" instead of a distance lets you see a plot of the calculatorentries(last ## entries).
- To see all the comments and calculator entries. . You can view previous "comments" and times byinputing "log" instead of entering a distance.

The competition ... other web calculator's ..Runners World ..etc