Algonquin National Park in Ontario, Canada is an amazing place for backcountry camping, with over 7,653 square kilometers of land, hundreds of campsites and 2,400 lakes. You can do virtually any camping activity and the skill level varies from beginner to expert.
One of many camping options in the park is to start at Rock Lake Access Point #9, where you canoe through Rock Lake to the portage. This portage is just about 400 meters, which is not too far but it is quite a small route and slippery in areas.
You can only reserve a lake, you cannot reserve a campsite, so it is best to go early in the morning as it is first come first serve. We took the first campsite in the second lake (Penn Lake) which was a large island that we had all to ourselves.
Backcountry camping at Algonquin is dog friendly, so we had our favourite camping buddy Shady Bear, our lab, with us. You should have your dog tied up so as not to get lost in this huge back country when you are not watching them carefully.
During August the bugs are minimal and the weather is amazing, allowing you to swim for most of the day.