The Houston Half Marathon was Limo's first race of 2016 and a duel with Mary Wacera Ngugi led to very fast times, with Limo in second place at 66:41 minutes meaning she moved up to eleventh on the all-time list for women's half marathon. A month later she improved even further to 66:04 minutes at the Ras Al Khaimah race – a time which made her the third fastest woman ever for the distance. She gained selection for the 2016 IAAF World Half Marathon Championships as a result – her first international call-up – and was among the favourites, alongside Ngugi. In the race held in Cardiff the five-woman Kenyan team formed the majority of the early leaders. After the halfway point only Limo, Ngugi and Peres Jepchirchir remained. Limo was beaten in a sprint finish by the less experienced Jepchirchir. The trio earned the Kenyan women the team title and Limo helped complete a podium sweep with Jepchirchir and Ngugi.