When I lived in the UK, I wasn't really aware of church camps, I had never heard of vacation bible schools and I went to scout camps and was able to tolerate the scant evidence that it's a Christian organization. But apparently, the whole religeousness of it all was really bothering some people, so they came up with an Atheist Summer Camp.
Think it would fly here? (with or without a treadmill)
http://news.bbc.co.uk/2/hi/uk_news/8172844.stm