half marathon, half-marathon running, Run United 1, Run United series 2015, Run United trilogy, running Run United 2015 Trilogy 1 01/18/2015 running diva Leave a comment Trilogy 1 registration of the Run United series will start on 19 January 2015, Monday. For details, visit www.runrio.com. 21k Medal Design 21k | 32k | 42k Medal Designs