From Riot Fest on Facebook: "Need a ride to or from Sports Authority Field at Mile High for Riot Fest? Our friends at Illegal Pete’s have got just the thing for you! Illegal Pete’s is offering shuttle rides to and from the festival each day from 2 of their locations: Denver $10 & Boulder $25 with beer and burrito"
Not really sure why anyone would need this in the city, as Denver has an excellent Light Rail system, with a stop right at Mile High. Still, it's good to have options.