Moderate hikes were right up my alley because I do a fair amount of walking and bike riding. But to do a canyon crossing, you need to be in great shape able to hike uphill for long periods of time without having to take too many breaks. Deciding what time of year to travel to Copper Canyon is also important. During the summer, there might be better deals at hotels, but the tropical heat in Batopilas is intense. Hiking in that kind of heat can be hazardous.
Summer can also be rainy.
Rain makes hikes messy but also cools things off. Late fall and spring are probably the best times of the year to go. The weather is more reasonable and the canyon is lush and in full bloom. What to pack depends fully on the season one ventures to Copper Canyon. I went to Copper Canyon during October and took a lightweight down jacket.