Dallas Marathon | KERA News

Dallas Marathon

Krystina Martinez / KERA News

As thousands of long-distance runners prepare for Sunday’s Dallas Marathon, the National Black Marathoner’s Association will be holding its annual summit and banquet.

Stella M. Chávez / KERA News

More than 20,000 runners from 25 countries are planning to run in Sunday’s MetroPCS Dallas Marathon, but icy conditions are not helping ease their nerves. These runners have put in months of training and plan to show up at the starting line no matter what -- unless the race is canceled due to the winter storm.

(UPDATE: Since this story first aired and was posted online, the marathon has been canceled due to the ice storm.)