“The Toughest Little Marathon in Texas” is back, benefiting Be the Match, the national marrow donor registry. Packet pickup is Friday from 4-7 p.m. at the Waco Convention Center. The 1-mile fun run, kids marathon and 5K will be held Saturday morning at Indian Spring Park. The ultramarathon, marathon, halfmarathon, 10K and relay begin at 7:30 a.m. Sunday at the Waco Convention Center. The weekend’s activities will also include a kids festival, pancake breakfast, firetruck pull and more. For details visit miraclematchmarathon.com or call 405-2518.