really varies for me. private land around here is usually small paracels of land...most of it being farmland so once you get across the fields or pasture your pretty near your spot. my walks there average about 1/4mile id say...short 5-10 minute hike...
public land it varies from 1/4 mile to 2+. my one spot is a 25 minute power walk. any faster and id be jogging. that spots already a 20 minute drive...so needless to say, im usually powerwalking/jogging that hike in

public land around here is usually heavily heavily hunter so walking far is the way to go....