I’m trying to map the basic elements that would be needed in order to have the race calculator. I don’t feel 100% convinced of what should be the right approach: asking the user what they need to know (pace VS total time) or just give all the option and let them figure out. At this point, I’m towards defaulting to set a pace that would generate the total time and they would be able to switch from a pivot to the other option.

I’m sharing some rough sketches of the process from my notebook and incoming progress in this kind of worklog: https://adrianmato.com/blog/worklog/race-calculator