If you're looking for anime similar to Vongola GP Kuru!, you might like these titles.
Midori Makibaoh is a small white racehorse. Compared to other thoroughbred horses, he looks more like a donkey with wide nostrils. However, with his guts and speed as his weapon, Makibaoh wins in every big race. In the beginning of his career, Makibaoh had a trouble making his debut as a racehorse, because of his appearance and various disadvantages he had. But Makibaoh had reasons to overcome his difficulties; there was a lifelong rival horse called Superhorse Cascade, that Makibaoh needed to defeat. Plus, he was determined to win back his mother, a horse that had been taken away for pay back the debt on the farm. There are many hardships that Makibaoh has to overcome, but he thrives in the series of races to become a great racehorse
Mikoto Shinozaki is a normal high student with unfortunate normal problems: he's terrible at sports, has no special talents and is bullied by everyone at his school. That is, until one day Yuki, his beautiful, long-time crush, asks the boy if he'll join her brother's cycling team. Desperate to gain her affection, Mikoto tries his best to learn how to ride a bike to not look foolish in the process, soon discovering that he actually enjoys the sport! Now, Mikoto will try his hardest to become the best cyclist in the world, encountering hardships, trials and successes along the way.
Gun Kyoma is an extremely fast 17-year-old bike racer. He must pair up with his rival and new high school classmate, Hijiri Hideyoshi, to compete in an endurance race at Suzuka International Racing Course.
Taira Capeta has spent his entire young life being a good and dutiful son to his hardworking but impoverished widower father. Only once has his father seen him show any personal wants or needs -- when he saw a model car in a toy shop. Despite his lack of cash, his father has hatched a naïve plan to give Capeta the ultimate gift: his dreams fulfilled. From a modest beginning, Capeta, with the help of his father and his good friends Nobu and Monami, embarks upon an amateur career as a go-kart racer, aiming for the ultimate prize -- graduation into the professional ranks of formula racing. But will his poverty cause his dreams to fail?
Speed Racer drives the fabulous Mach 5 in race after race, although the prize money isn't his true goal: he seeks to be the best racer in the world, and to defeat the mysterious Racer X (not knowing that Racer X is actually his long lost older brother, Rex Racer)! The races don't take place upon the boring circular tracks that one might expect; instead, they tend to involve the countryside, and rough and dangerous terrain. This is where the Mach 5's special features, such as super traction tires and jumping struts come in very handy. Speed must also deal with villains ranging from unscrupulous racers to thieves and spies, but he has the help of Trixie, his little brother Spridle, and the pet monkey ChimChim along the way.
It took a little longer than he had hoped, but Kenji Hatano managed to become the #1 kyotei racer in Japan, after winning his first SG Championship. His career is still young, though, and now he has others who want similar glory, like his old Yamato Academy classmates & new racers he's never gone up against before. However, a freak accident during a race results in his left hand & wrist getting cut open by a propeller, which could very well end his career right as it truly started.
All Kenji wanted was to become a professional baseball player. But when his coach suggests that he look into the world of boat racing, the boy quickly throws himself into the sport. Alongside other racers such as Hiroshi, Kenji will now train and drive his heart out in an attempt to reach his goal: to be Japan's number one boat racer!