A free screening for Prostate Cancer will be held today for men from 9 am to 7 pm at Les Schwab Tire on Fairview in Boise. The mobile unit will move to downtown Boise tomorrow and those times are 9 am to 5 pm. The "Main Street Mile" is a fun run and race tomorrow evening in downtown Boise. The cost of the race is $25 for adults and $10 for children. You can register on line by clicking here or there is last minute registration at the race.