Links That I Find To Be Helpful
This is a bit messy, but I don't have the time to clean it right now. Must head out for a run. :-)
Top races with qualifiers
Some Great HR tips from Pfitzinger, including one re racing with HR.
A great place to see more basics of HR training/running... another perspective is always great to have, so I recommend learning from this page too... and others.
Ways to estimate Max HR (which are often very inaccurate).
Great article to understand hill running