Blue Diamond Almonds Shamrock'n Half Marathon

Blue Diamond Almonds Shamrock'n Half Marathon spreads over two days in Sacramento, California, on March 13–14, 2027. The 10K and the 5K run on Saturday, and the half marathon (13.1 miles) closes the weekend on Sunday. Start times are not published, and no elevation figures are given for the courses.

Splitting the weekend this way opens the door to running two of the three, with the shorter Saturday race as a shake-out before Sunday's main event — a plan that only works if you keep the first one genuinely easy. As a standalone goal, the half sits well in mid-March for anyone who held their winter mileage: a 10- to 12-week build with a long run reaching 10 to 11 miles gets you ready. Whatever you enter, the date makes a natural end point for a winter training block.