At the start of 2014 she established herself among the top road runners by winning the World's Best 10K, defeating Gladys Cherono, Linet Masai and 2013 champion Joyce Chepkirui. Her first senior international medal followed in March at the 2014 IAAF World Half Marathon Championships. Part of a strong Kenyan women's team that won the team gold by taking all top five positions, Wacera ran a personal best of 67:44 minutes for second place behind Gladys Cherono.