Get a rocky start to your day at REI Denver Flagship (1416 Platte St.; 303/756-3100). Grab a breakfast sandwich at the store's Starbucks cafe, then scale the 47-foot rock pinnacle that mimics local sandstone formations ($10; call for days and times).
Hit the trail. Head out to Red Rocks Park & Amphitheatre (off Morrison Rd. in Morrison; www.redrocksonline.com or 303/697-4939), on the western edge of Denver, for a hike past sculpted rock and towering cottonwoods that splash bright leaves across the trail. Try the 3-mile loop trail that starts at the Trading Post and winds around mammoth red sandstone formations.
Lunch at Red Rocks. Stop at the Red Rocks Underground Visitor Center, at the top of the amphitheater, for lunch at the Ship Rock Grille ($; 303/697-4939); try the salmon salad or venison sausage. If the weather's nice, dine on the boulder-edged deck.
Navigate the corn maze. On the way back downtown, detour to the Denver Botanic Gardens at Chatfield (8500 Deer Creek Canyon Rd., Littleton; 303/973-3705) and test your sense of direction in an intricate 5-acre maze (open 4-10 Fri, 10-10 Sat, noon-8 Sun through Oct 31; $8, $6 ages 3-15).
Dine at Table 6. A casual dinner in a laid-back neighborhood cafe is a fine way to wind down the weekend. Alamo-Placito's new Table 6 ($$; dinner daily; 609 Corona St.; 303/831-8800) has a bold seasonal menu, from seared albacore tuna to rabbit with grilled oyster mushrooms, bacon, napa cabbage, and sweet corn.