Trilhos dos Reis is a mid-January trail running and walking series in Portalegre, Portugal, offering routes for adults, children, and juniors. The program includes a 12 km walk and 18 km, 31 km, and 48 km trail races, suitable for walkers, newer trail runners, and those seeking a long mountain day. The 18 km race is a solo run of approximately 18.39 km with 708 m of elevation gain and loss, one aid station, a seven-hour time limit, and an 800-runner capacity.
The adult courses are single loops, with the 48 km trail being the most popular. The terrain crosses natural areas, forests, and vineyards surrounding Portalegre, providing a rural Portuguese trail character distinct from urban road races. The series comprises Mini Trilhos dos Reis, TL - Trilhos dos Reis, and Ultra Trilhos dos Reis, and is associated with the ATRP challenge and the Delta Cafés brand.