Welcome to Brighthead, Maine, a coastal town where the winters are cold and the hearts are warm.Only a month after the death of her sister, Aileen gets an offer from the running club her sister founded. They want to hold a memorial 5K race in Kelty's honor, and they'd like Aileen to be a part of it.Although Aileen is a librarian who's never run a day in her life, the club promises that running will help her feel closer to her sister's memory. It doesn't hurt that the guy who offers to train her is cute and tells fun stories. She agrees, although running three miles is the scariest thing she's ever done in her life. Maybe she'll read a few books about it first.Trey has never held much to schedules. Life's too short to tie yourself down. He's got a flexible construction job that lets him help his brother who's failing out of college...or that sweet new member whose grief and insecurity make him want to smooth out the road before her. He'd love to take away Aileen's pain, and running together is the best way he knows. She has fun when she's with him. If it leads to more, he's all-in.While Aileen becomes overwhelmed with settling out the details of her sister's life (not to mention two houses full of furniture), Trey has no shortage of spontaneous adventures, whether it's tidepooling or an impromptu concert. But time after time, when she needs him, all he gives are broken promises. That's not going to work for a training program-or for a relationship. A 5K and a Kiss brings together an unlikely pair racing to find love somewhere between the starting line and the finish.Love isn't a sprint-it's a long run. Maddie Evans is a runner and biker. She lives in New England with her family and tropical fish, and she's always thought warm hearts are the perfect antidote to cold winters.