Participants climb the Hannibal lighthouse steps to raise money for autism-related activities. Registration starts at 8 a.m. and people will climb the steps from 9 to 11 a.m. Participants will climb the 244 steps to the lighthouse, then go straight on the trail to Cardiff Street, turn left onto Rock Street and then down to Mark Twain Avenue and back to the bottom of the steps. Each person will climb as often as they want. Registration will be $25 and will include the cost of the t-shirt.