Scream Scram Halloween Run/Walk at Washington Park (Friday, Free to watch) It's well over $10 to enter the race, but that doesn't mean there won't be plenty to see for spectators. With a group of people dressed up in Halloween costumes vying for the first place prize of a round-trip plane ticket, we're pretty sure voyeurs will have no shortage of entertainment -- competition always brings out the best in people, right?VeloSwap at National Western Complex (Saturday, $8) VeloSwap is Christmas for road-jockeys. It's the only time throughout the year a bunch of gear-head cyclists can get together and buy new parts and bikes for incredible deals. It's always a good time too, and we can say we've come across some epic deals ourselves over the years. Whether you're looking for a new Dura-Ace derailleur or some specialized French threading, you're likely to find it all. Fresh City Life: Vlad the Impaler's Fair and Expo at Novo Coffee (Saturday, Free) To be honest, they had us at "Impaler," but for those not so easily swayed by death-metal sounding words, Vlad the Impaler's Fair and Expo is a crafting fair, where attendees can sample four different crafts at different sites at Novo Coffee. It's all themed around Halloween, albeit only slightly in some instances. Danceotron at the hi-dive (Saturday, $5) It's been something like four months since we've had our Danceotron fix in Denver, but thankfully, DJ Sara T and company are bringing one of Denver's best dance parties back. If all you want to do is dance without the bullshit, the showboating or the club atmosphere, tonight's you night to shine.