I had a nice dissussion with my family about this.
If there are signs of a zombie apocalypse, the first thing we'll do is get ready to leave. We live in a fairly populated area, and we all know that none of us are good enough to defend ourselves from zombies for that long. So we grab our emergency kits, the warmest clothing we have, non-perishable food, the camping supplies, our bikes, any possible weapons, and anything else we may need and throw it in our minivan.
Then we cover ourselves in as much protection as possible: kevlar/leather gloves, body armour, breathing masks, visors, sparts padding; anything that would stop teeth from puncturing skin if we do happen to get bitten. We decided that we'll have to leave behind our cat, though we love her, she would just be dead weight.
We then drive to grandma's, and if she's still alive, take her with us. We'll try to set up communication with other family/friends and form a caravan of large vehicles. If any of them have a big, useful dog, it can come, but any other pets will have to be left behind.
Then we go loot, if possible. Costco would be our first choice, as it is full with pretty much everything. Grab clothes, tools, car maitenance stuff, food, water, sharp pointy things, dog food, etc. Maybe see if we can steal a semi-trailer to fill with crap and possibly act as a shelter later.
Then to a camping store, grab winter tents, sleeping bags, mountain climbing stuff, fishing/hunting supplies, water treatment supplies, fuel, food, maps, clothing+equipment, packs, canoes, bikes, anything we can fit. Some grain/fruit/vegetable seeds would be a good thing to grab if we find them anywhere. And both these times, we don't park outside, we drive inside the building, up and down the aisles, opening the doors and grabbing shit.
We also decided that the only people we would stop to help are people with children/children, unless they have their own vehicle and supplies, because as much as our heart bleeds, we can't take on dead weight and they will take up space that could be used for supplies. This is about surviving, adn we can't do that if we let ourselves be dragged down.
After we've all gotten as many supplies as we can, we start driving north. Hopefully, the winters will just freeze any zombies. We'll take side roads, avoiding cities/towns, warning people we come across, until we come to a nice secluded area that is hundreds of kilometers away from any civilisation.
There, we will set up camp indefinatly. One of our emergency kits has a solar radio, so we will use that to keep updated on the world around us, but otherwise treat the place as if it will be our home forever. Learn how to live off the land, most of us know how to fish/hunt/grow a garden, etc. and can teach the others.
Of course, if everyone's trying to flee, driving out of there just sends that plan down the shitter, so our plan B was to grab all our stuff, jack a big boat and sail away up north, keeping close to the coast. We can fish for food and evaporate water, and hopefully we'll have enough dried fruit and stuff to prevent scurvy and such. Once we're far enough north, we'll dock, set up camp, etc. We might be able to stop in a few non-infected costal towns to buy supplies on the way, or, if we're feeling brave enough, a few infected ones and loot. We won't plan on it though.
I feel like we put way too much thought into this, but damn if our family isn't going to be prepared if/when this goes down.