As far as I known, most western ppl in North American or Europe they like to grad some friends and have some outdoor activities. Some popular sports I suppose would be hiking,rock climbing, rafting ,canoeing, boating, bicycling, racing cars?beach volleyball? war game?(I am not quite sure whether those three activites are related to outdoor activities).... Those are currently what I am thinking about until I am writing this topic. I'm pretty welcome everyone who can provide your known outdoor activities to me as well as correct my English. :))

Actually I am a bit confuse about rafting and canoeing. Coz in my hometown or in some parts of China I just tried maybe called rafting mostly. We will sit on a rubber boat about 2-4 ppl together then raft down the river with the paddle. When the rubber boat goes down in some narrow zones and the water will flow rapidly. You might take effort to row the boat quickly than the stream so that you the boat would not be turned over. I haven't tried canoeing but regarding from what I seen on TV. The sport is you will seat in a kinda also looks like rubber boat and use the paddle to control the boat with the flowing water. Canoeing is one of the famous water activites in Olympic. 

Alright welcome everyone share your discussion and leave your valuable corrections for me.thanks!