This challenge sounds interesting to me having just started a small run streak of my own. I'd like more clarification on "honest effort walk/run. I walk/run almost all my runs, 30 sec walk, 90 sec run. Would this count in this challenge?
Its all on the honor system, and this is a challenge, not a competition. I think 90/30 is fine...maybe on the edge of being a lot of walking with 25% of each session being . But, I'd also think about why you are walking every 90 seconds---and perhaps, slow down to allow you to run for longer or other appropos modifications. As longer (perhaps easier) bouts of running with less walking will have some benefits over the 90/30 framework.
Some people have handled these situations by simply totaling up the run-only time in walk-runs. So, 20 repeats of your 90/30 cycle to get your 30min of running.
In the old rules, only runninng time counted. It meant that you have to execute the opposite of race walking. In race walking one foot MUST remain on the ground at all times. In the old 100/100 rules, for a stride count as running, both feet must leave the ground on every stride. I felt that was a fair defintion of what running is and it left nothig to interpretation. I am against walking time counting (even honour system), just like I would be against Ebike time counting as biking in a bike challenge. Its not the sport the challenge is about.
Two years ago I used the 100/100 as rehab to get back into running. My goal was a single 30 min continuous run outside by the end of the challenge. Intially I started with 5x1 min jogging with as much rest as I needed on the treadmill and then 10x1, then 8x2, then 10x2, then 6x3....eventually got to 6x5 then 2x15.....then ventured outdoors in the last week and got it done. But did not count any walking time. To me, that's not the sport I was trying to get back into. The jogging was barely faster than a fast walk....we're talking 7-8kph, but it was jogging and that mattered (at least to me). Later that year, I did 5 Olympic tris and a half IM ...no steps of walking just running.
Part of the reason for the original rule of "no walking" was to train the mind for races that are really hard and stick to the mindset of not walking at all. When you do it 100 days in a row, it gets beaten into the head and when you're at mile 22, up a hill, in 35C heat and you want to walk, well, you know that "walking is not an option"....so there was a reason why I had originally excluded walking from the old rules.
But hey, its all a personal challenge, people can do what they want if it helps them gain fitness.