Originally Posted by
spelger
I have read on zwift insider that you must complete the everest challenge for it to count before changing challenges. the climbing must be consecutive to count. so, switch challenges at your own risk, it would be a shame to have to start over.
Nah, you can always change challenges and keep progress. I switched all the time, including in the middle of riding, depending on how hilly or flat the route was. You're probably confusing what ZwiftInsider was saying, which is that elevation gain only counts for the challenge when it's active.