My mother passed when I was five. If I were in your position, I'd want to spend as much time as possible with both parents, as I never really knew my mother. You never know when the last time you see or talk to someone will be.

At least your parents come to visit you, Sincerely a parentless kid.

I haven't even seen my parents that much this month and I only live five minutes away. And they've been to my house probably that many times this year. :|

At least they come visit you. I moved 10 minutes away and never saw my parents.

Next time they arrive unannounced, apologize profusely that you are just about to head out to a volunteer thing you do. Sorry, they can't come; and no, you don't know when you'll be back. No, you don't know when you need to do it again; it's for [something like a women's shelter] that requires help at all hours without much warning. If you'd known they were coming you could have told them you couldn't do it today when they called; but now that you've agreed to go in you can't back out. Then go to your favourite bookstore/cafe/library, and hang out for several hours. Don't come home until you're sure they're gone. Check for their vehicle before you allow yourself to be seen. If somehow they are still there and see you, tell them you just had to run home to grab [more tampons/your laptop/info you'd forgotten/whatever] and can't stay. Take off for a few more hours. Do this every time they show up unannounced until they figure out that they will be wasting a five-hour drive if they don't let you know they're coming ahead of time. Whenever you don't want to deal with them, tell them you already volunteered for that time slot, sorry. And occasionally, when they call to come over (especially the first time they do call), say yes. ;) Otherwise, they won't see the benefit of calling first.

My parents are the same way OP. They visit so they don't have to get a hotel when they want to watch sports games

What you should do is tell them that you need space. If they don't like that then you might want to consider telling them that there not allowed to show up anymore. If they keep showing up call the cops. They are being too close and should see that you are an independent adult who doesn't need mommy and daddy few days

someday you're going to want to see your kid, who you absolutely love.....and your kid is going to hate the fact that you want to see him/her. And that day you are going to post on FML, stating how your life sucks because your own kid doesn't want you to visit him/her!.....i guarantee this!

Sounds like ya might need to move further away.

Don't be so harsh, one day they won't be around at all and that's when you'll regret complaining and about seeing them. You should value you time with them and appreciate that they carried out a 5 HOUR JOURNEY just to come and see you.