i have some crazy friends that will say, hey, beth, you want to try this with your mom? and i ll say, okay. and then she won t say no. so it has led us to some fantastic events. i feel very relaxed. i just meditate. and just relax, it s fun. we keep going. we keep moving forward. reporter: all the while strengthening their bond. it s just been a great way for us to find ways to spend time together that we both can enjoy and be together. anything is possible and there s hope. we found this together so we could reconnect in a way that makes us both happy. go team babsie. we re rooting for you every step of the way. quite an impressive feat. thank you so much for watching. gma first thing in the morning. david muir will be right back here tomorrow night. i m linsey davis in new york. have a great evening. good night.
first inir his son. i m excited about heartbreak hill. oh, you re excited about heartbreak hill? reporter: they re also excited about breaking a record. barbara singleton and her daughter beth are poised to make history tomorrow as the first daughter pushing mother duo to run the 26.2-mile boston marathon. it s getting closer, so it s getting real. reporter: beth and her mother, known as babsie, have been running together for seven years, inspired after seeing boston running legend dick hoyt push his son rick, as they competed in a local triathlon in a specially designed chair. i got so overwhelmed that when i got home i started typing in team hoyt, hoyt chairs. within two weeks i was driving somewhere to get a jogger to run with my mom. reporter: barbara has lived with multiple sclerosis for nearly 40 years and gets around by wheelchair. the two have run races in virginia, cape cod, and d.c. they even ventured up mt. washington to see the sunrise.