The BMW Dallas Marathon has reopened registration for its Dec. 13-15 race weekend. Learn more about the new Friday Nights Lights Mile and the changes being made to the @SMUCOX School of Business Relays at: buff.ly/2WYMjEa. #runDallas

Check out this week's race calendar at: buff.ly/2SnmlXt.

Check out the Memorial weekend race calendar at: buff.ly/2WYMjEa.

Check out upcoming races this weekend and next week at: buff.ly/2WYMjEa.

Check out a list of upcoming road race and multi-sport events in D-FW at buff.ly/2EW5Qhl.

Plano mom, inspired by Team Hoyt, to share triathlon experience with her medically fragile son. Read more at: buff.ly/2WYMjEa.

Check out the upcoming North Texas running and multi-sport events at buff.ly/2WYMjEa.

Dan Millet, a dedicated runner who helped transform the Dallas running scene, died Sunday. Read more about Millet's life at: buff.ly/2WYMjEa. Photo: Dan Millet and Bob Vernon at the 2015 opening of Luke's Locker's White Rock store. (Bob Vernon)

Check out this week's race calendar at: buff.ly/2WYMjEa.

Check out the local July 4th events along with upcoming weekend events at: buff.ly/2WYMjEa.

Check out the upcoming North Texas events at: buff.ly/2WYMjEa.

Check out this weekend's events at buff.ly/2WYMjEa.

Check out this week's race schedule at: buff.ly/2WYMjEa.

Check out a list of upcoming local road races at buff.ly/2WYMjEa.

Five minutes until the start of the 10K of the runDallas BMW Dallas Marathon weekend.

The 10K has started at Dallas City Hall plaza for the runDallas BMW Dallas Marathon weekend.

The 5K has started.

Amarillo’s Justin Gable took the early lead in the BMW Dallas Marathon. He completed the 5K in 17:28.

Dallas’ Drew Wiles is leading the BMW Dallas Half Marathon field. He completed the 10K in 32:20, nine seconds ahead of Jordan West.

Caitlin Keen, an Olympic Trials qualifier, won the women’s title at Sunday’s BMW Dallas Half Marathon in 1 hour, 18 minutes, 3 seconds. She used the race as a tune up for the Feb. 29 Trials in Atlanta.