Thanks to all of you who participated in the 2011 Rudi's Organic Boulder Marathon and Boulder Spring Half events. Next Up!

We're excited to announce that the 2012 Rudi's Organic Boulder Spring Half Marathon, 10 Mile & 5 Mile will take place on Sunday, April 1st at the City of Boulder Reservoir. We're going to have to limit registration this year, so if you want to be guaranteed a spot at the starting line, don't hesitate to get registered for the event. Click here to see what all runners receive – and to get yourself registered for the Spring Half now!

The 5 Mile distance at the 2012 Rudi's Organic Boulder Spring Half event is also going to serve as the 2012 USA Track & Field Colorado 5 Mile Championships! If you're looking forward to a shorter distance, then the 5 mile is for you!

The 2012 Rudi's Organic Boulder Spring Half is shaping up to be another great event, so get your friends together, get registered and commit to a solid training program over the winter months – so you'll be fit and ready to go on April 1st! We'd also like to thank the nearly 2,000 runners who participated in the 2011 Spring Half, which took place on March 27th at the City of Boulder Reservoir. Below are some of our favorite images from the 2011 Spring Half event: