My pack will weigh in at about 20lbs. Trying to keep it as low as possible, but won't be able to go much lower and still have the items I need to feel safe in the backcountry.
I am a log distance runner and am working on trail runs with my pack. My pace is much slower with my pack and am still building up mileage with it. I have been seeing good progress. Of course, I have to slow my pace down considerably to maintain my endurance with the pack.
I am bringing two pairs of shoes, so I am planning on forging rivers with the shoes I am wearing. I'll be able to run the water out of them a bit after I exit the river and then switch. I thought about it, but it just doesn't make sense to carry the extra weight with an additional pair of crocs/other river crossing shoes.