The first view is a good way to start thinking about logarithms: logarithms are exponents. That's the view introduced in this section. Another view is that logarithmic functions âundoâ exponential functions, or (more briefly) logs âundoâ exponents. and is the subject of more advanced lessons.
Report Abuse. You need to replace shoes every 300 miles, so I would say run at least 30 miles in them before a race, to break them in well. 50 would be optimal, but 30 would be fine. That way you get a week or two to figure out what spots you need to tape or ice pre-race.Good luck in your 5k's!eport Abuse. You need to replace shoes every 300 miles, so I would say run at least 30 miles in them before a race, to break them in well. 50 would be optimal, but 30 would be fine. That way you get a week or two to figure out what spots you need to tape or ice pre-race. Good luck in your 5k's!
Numbers wise, a good running shoe should last you between 400 and 600 miles. Thatâs a pretty large range, I know, but your build, running style and training load all factor in to what end of that range your shoes will fall.ear Mario, Iâm a new runner training for my first half marathon with Team in Training. Our training groupâs coach told me to change my shoes every six months, but the guy at the running store in town told me every 300-400 miles.