Lake Sonoma 50

Lake Sonoma 50 is a 50-mile ultra marathon race held near Healdsburg, California. The course circumnavigates the Warm Springs arm of Lake Sonoma on hiking trails. It takes place annually on the second Saturday in April.[1] The race was first run in 2008. In recent years it has become one of the most highly competitive ultra marathons in the United States.[2][3]

References

  1. ↑ "Lake Sonoma 50". http://lakesonoma50.com. Retrieved 25 February 2015. External link in |website= (help)
  2. ↑ "2013 Most Competitive Fields". UltraRunning magazine. 33 (8): 35. January 2014.
  3. ↑ "2014 Most Competitive Fields". http://www.ultrarunning.com/features/reference/2014-most-competitive-fields/. Retrieved 25 February 2015. External link in |website= (help)
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