Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Running
Marathon Training Calculator
Plan your marathon buildup by calculating a weekly mileage target and ideal training paces from your goal finish time. Use it when structuring a training block weeks before race day.
Fill in the required fields to see your result.
Running
Running Hydration Calculator
Estimates how many ounces of fluid a runner needs during a run based on body weight, duration, temperature, and intensity. Use it before long runs or races to plan your hydration strategy and avoid dehydration.
Fill in the required fields to see your result.
Key differences
| Marathon Training Calculator | Running Hydration Calculator | |
|---|---|---|
| Category | Running | Running |
| Inputs required | 4 | 4 |
| Result | Easy Run Pace (min/mile) | Recommended Fluid Intake (fl oz) |
| What it does | Plan your marathon buildup by calculating a weekly mileage target and ideal training paces from your goal finish time. Use it when structuring a training block weeks before race day. | Estimates how many ounces of fluid a runner needs during a run based on body weight, duration, temperature, and intensity. Use it before long runs or races to plan your hydration strategy and avoid dehydration. |