It’s easy to walk around old Louisville and downtown. Sidewalks and crosswalks connect the blocks and neighborhoods. Schools and churches and other services are close enough to reach on foot or in a wheelchair. Not so much in other parts of the city.“It’s when you get into the parts of the city that were built post-war where you have the 'disconnectivities,' and you have greater distances and lack of destinations to walk to," said Steve Sizemore, Louisville Metro division planner.He says planners at the summit will solicit ideas from attendees for making some of the city’s newer neighborhoods friendlier for pedestrians. The challenges go beyond simply pouring the concrete for sidewalks. Each parcel of land can have a different owner, and those owners will have to participate if pedestrian routes are to be stitched together.