try sumas mountain in abby or vedder mountain in chilliwack... peg leg is fun to spend the day at if you've got a stock truck..
hopping on the maintenance run will let you meet up with others and do some trail riding. harrison has a ton to offer
like others will recommend, grab yourself a back roads map book and take a look at some of the forest service roads..
eagle mountain is supposed to be fun too but inorder to head up there you will either need to tag along with someone who has a key for the gate or obtain a key for yourself from the city of coquitlam..
hope that helped a bit :beer_cheers:
edit: noticed you are driving a jeep patriot. is it stock?