Jim Chevalier, creator of citystrides.com, joins Sean Devine in person! to talk about the creation of his great run-every-street-in-my-city website.

Links for this episode:

• @jameschevalier
  
• citystrides.com
  
• k-d tree Wikipedia entry
  
• kdtree Ruby gem GitHub repository
  
• PostGIS - Spatial and Geographic objects for PostgreSQL
  
• RunKeeper
  
• CityStrides map of Jim and Sean's run
  

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