回複：travel suggestion in Denver

you can get to the rocky mountain national park in two hours from denver. if you don't have much time, say, just want to spend a day there, you may go to the bear lake. there are a couple of hiking routes you can choose. Please be prepared if you want to hike to the flattop mountain. it is time-consuming and will be very cold up there. you may choose other easier road which has beautiful lakes you can visit. have fun.