Not for all runners
Response from developer
Thanks for your feedback. There will be a new version 1.2.9 which can be used for ultra marathoners. Please let me know if this is fixing your issue.

Archived App
This is an archived listing of the app previously available on the App Store.This tool helps runners optimize their events by calculating distance, time, pace, and speed. It offers quick buttons for common inputs and interval calculations to track progress during runs. Settings can be synced across devices via iCloud.
1.4.4
June 2, 2022
- Small bug fixies - Compiled with iOS 15
Thanks for your feedback. There will be a new version 1.2.9 which can be used for ultra marathoners. Please let me know if this is fixing your issue.
Runners Calc allows you to input or calculate distance, time, pace, and speed. It also supports interval calculations for runs, with intervals variable between 1 and 10 km or miles.
The developer has stated that they will never add ads to this app. It is designed to be a free app without advertisements.
The app is designed to help runners optimize their next event and organize it much better by providing accurate calculations for pace, speed, and intervals.
Yes, all settings in Runners Calc are now synced via iCloud to all your devices that share the same Apple ID, ensuring a consistent experience.
Runners Calc has a rating of 4.3 stars based on 7 ratings, indicating a generally positive user reception.
Yes, Runners Calc is a free app. The developer explicitly states they are not developing it to make money and will not change this, even when adding new functionality.
Runners Calc is supported on iPhone, iPad, iPod, and Apple Watch devices, allowing for versatile use across the Apple ecosystem.
The latest version of Runners Calc, 1.4.4, was last updated on June 2, 2022. The developer is open to feedback for future improvements.