Sierra 51050 Relay & Half Marathon was held in Ten Cents to Heaven Leisure Camp, Tanay, Rizal where teams and individuals braved the hills of Sierra Madre last March 01, 2015. New and returning teams battled it out to see who was the fastest in the relay while participants in the half-marathon and 10k solo categories tried the steep uphills and sharp turns of Sierra Madre.
The Sigue Correr Runners Alpha defended their title for the fastest in the Relay 51050 category with an official time of 3:54:18 hours, followed by Teams Nestle 1 and 2 (4:00:20 and 4:34:41 hours, respectively). For the Half Marathon solo category, Noel Dimabayu (1:49:31 hours) won the male fastest and Rashel Peña (2:25:36 hours) is the fastest in distaff part. The new 10k solo category was lead by Kristoffer Troy Sison (49:25 minutes) and Jo Punay (56:18 minutes).