“The Toughest Little Marathon in Texas” is back to benefit the Baylor Scott & White Marrow Donor Program and the Be The Match registry. The weekend’s festivities will include a variety of races, including the Firefighter challenge relay. The kids’ marathon, 1-mile fun run and 5k will be held on Saturday morning at Indian Spring Park — check the website for start times. The ultramarthon, marathon, half marathon and 10k will begin at 7:30 a.m. on Sunday. The weekend will also include events for the family, including a fire truck pull, kids’ festival and a health and wellness expo. Visit miraclematchmarathon.net for the full schedule or call 405-2518 for more information.