Aside from Boston, here are a few races I think would be fun to try sometime:

• Hong Kong Marathon (February)
• London Marathon (April)
• Everest Marathon (May 29)
• Vancouver Marathon (May)
• Madison Marathon (May)
• Portland Marathon (October)
• Reykjavik Marathon (October)
• New York City Marathon (November)
• Honolulu Marathon (December)

OK, the Everest one might not be fun, so to speak, but wow…