Time to celebrate autumn! The weather is cooperating this week so don’t miss the chance to enjoy some of these fall favorites:

Friday-Saturday. The Molly Brown House Museum will be filled with spooks and scary tales at the house’s 18th annual Victorian Horrors event. Lit only by candlelight, the mansion will host the “ghosts” of famous authors like H.G. Wells, Edgar Allan Poe and Sarah Orne Jewett. There’s a specter in almost every room of the house, and each has a story to tell. 6-9 p.m.  Friday night and Saturday, and Oct. 23-24. The Molly Brown House Museum, 1340 Pennsylvania St.; 303-832-4092. Tickets are $16 for adults, $13 for seniors, children and Historic Denver members. For advance tickets, call or visit mollybrown.org.

Friday-Saturday. Meet Gustafer Yellowgold, a little guy who comes from the sun. The mellow, yellow dude is the creation of musician Morgan Taylor — his songs provide the soundtrack to Gustafer’s animated story. Taylor performs live while the audience watches video of Gustafer, his pet eel and his friends: A pterodactyl and a dragon, named Asparagus, who lives in the fireplace. 11 a.m. Friday. Meadows Branch of the Boulder Public Library, 2800 Baseline Road; 303-441-4390. 11 a.m. and 2 p.m. Saturday. Boulder Public Library, 1001 Arapahoe Ave.; 303-441-3100. All shows are free.

Saturday. The Denver Marathon is strictly for grown-ups, but kids can join in their own way at the McDonald’s Mile Kids Race. Held the day before the marathon, the race starts right with a good, long stretching session. Then, kids race others in their age bracket, from ages 3 to 15. A Kids Expo will be on-site during and after the race, and everyone can celebrate at a post-race party. 9:15 a.m. Saturday. Civic Center Park, Broadway and Colfax Avenue. Registration is $20. For more information, visit, denvermarathon.org.

Saturday. Learn about Littleton’s spookiest places on the Haunts of Littleton Walking Tour. The journey through Littleton’s sordid past and creepy present takes guests around the historic downtown area, with stories told of ghost trains, catacombs and ladies of the night who still peek out of windows. Colorado’s most famous maybe-cannibal, Alferd Packer, is buried in Littleton — expect to hear something about him, too. Additonal tours Oct. 24 and Oct. 30. 7 p.m. and 9 p.m. Saturday. Arrive 10 minutes early. Meet at the Littleton light rail stop, in front of Romancing the Bean, 5800 S. Prince St., Littleton. Admission is $13 for guests age 14 and older, $2 for kids age 13 and younger. Free. RSVP for tours at bestchamber.com.

Saturday. Celebrate fall in the west at the Refuge Roundup, hosted by the Rocky Mountain Arsenal National Wildlife Refuge. Grab a bite to eat from the chuck wagon and settle in for some live entertainment, including Aztec dancers, cavalry drills, dancing horses, music and historical demonstrations by Annie Oakley and Buffalo Bill Cody. Kids can also enjoy educational activities, including a tour of the refuge’s buffalo herd. 9 a.m. to 3 p.m. Saturday. Rocky Mountain Arsenal National Wildlife Refuge, 5650 Havana St., Commerce City; 303-289-0232. Admission is free. RSVP for bison tours and hayrides by calling 303-289-0930.

-Kathleen St. John