The Castell Grind came about like many of these events do, during a bike ride amongst friends. closed: 3/4 Grind 75K $53 see event details 45 miles Top 5 male / female 125 $53 Registration for this category will open on November 1, 2020 at noon closed: 3/4 Grind 75K Waitlist $0 3 talking about this. The Castell Grind is a bicycle race comprised of three separate endurance gravel races: the Full Grind 100K, 3/4 Grind 75K, and Half Grind 50K. The Castell Grind is comprised of two separate endurance gravel races, the Full Grind 100K 3/4 Grind 72K Half Grind 50K. Expect great views, wildlife, cattle guards, minimal traffic, adventure, and a gravel challenge worthy of bragging rights. CASTELL GRIND RESULTS. This waitlist will open when the Full Grind 100K category fills. All races will begin in Castell following remote gravel roads through the rolling Texas Hill Country in the middle of nowhere. All races will begin in Castell following remote gravel roads through the rolling Texas Hill Country in the middle of nowhere. 2014 HALF GRIND RESULTS As Mike Drost, one of the organizers explained it, "[some friends and I] had just bought some Salsa Fargos and were looking to explore. 2017 RESULTS 2016 RESULTS 2015 RESULTS 2014 FULL GRIND RESULTS. The Castell Grind is comprised of three separate endurance gravel races, the Full Grind 100K 3/4 Grind 72K Half Grind 50K. The Castell Grind is comprised of three separate endurance gravel races, the Full Grind 100K, 3/4 Grind 75K and Half Grind 50K. All races begin in Castell and follow remote gravel roads through the rolling Texas Hill Country. You can expect amazing views, wildlife, cattle gua I found these gravel roads using Google Earth and we planned a trip to Castell. Castell Gravel Grinder Race October 25, 2013 Mark Chandler News & Info , Rides & Trails The Full Grind 100K and Half Grind 50K races are taking place April 5th in the Texas Hill Country. All races will begin in Castell following remote gravel roads through the rolling Texas Hill Country in the middle of nowhere. 17 talking about this. If you see a discrepancy or have a question about the results please feel free to contact us. Congratulations to all finishers. All races will begin in Castell following remote gravel roads through the rolling Texas Hill Country in the middle of nowhere. The Castell Grind is comprised of three separate endurance gravel races, the Full Grind 100K, 3/4 Grind 75K and Half Grind 50K. The Castell Grind is comprised of three separate endurance gravel races, the Full Grind 100K 3/4 Grind 72K Half Grind 50K. The Castell Grind is comprised of three separate endurance gravel races, the Full Grind 100K 3/4 Grind 72K Half Grind 50K. In just over one year the Castell Grind gravel grinder bike race in Texas Hill Country has grown from "fun curiosity" status to "serious race" status.