There are indeed some good ones. For example, there are fanfics that depict them in a racing context, with Rainbow Dash's speed and Soarin's skills complementing each other. These fanfics often show their friendly rivalry turning into a deeper understanding and friendship. You might also find ones where they team up to save the day from some sort of danger in the magical land of Equestria.
One common theme is friendship. Given that they are both characters from the MLP universe which highly values friendship, many fanfics explore how their friendship develops. Another theme is competition, as both are pegasi and might compete in flying races or other aerial challenges in the fanfics.
Romance is also a very popular theme. Fans like to imagine a relationship between them, whether it's a budding romance or a more established one. There could be stories about how they first fell in love, or how they deal with relationship problems. Another theme could be friendship. Their friendship is explored in depth, like how they support each other during tough times, or how they have fun together. They might compete in friendly flying competitions and strengthen their bond through that.
One common theme is adventure. They might go on some exciting quests together as humans. Another theme could be friendship evolving into love. Since they are often friends in the original context, the fanfics may explore how that relationship deepens in a human setting.
Friendship is also a big theme. They are often depicted as friends who support each other through thick and thin. In fanfictions, they might help each other out when one of them is facing a personal or professional crisis.
Try checking out some MLP - dedicated forums. These forums usually have a section for fanfiction. Members of the forum often discuss and review fanfics, so you can get an idea of which ones are worth reading. For example, if a fanfic about Soarin and Rainbow Dash has a lot of positive reviews, it's likely to be a good one. You can also ask for recommendations directly in the forum.
I'm not sure if there is specifically such fanfiction that is appropriate. Fanfiction can vary a great deal in terms of content and quality. You could try searching on some well - known fanfiction platforms, but be aware that you may need to filter through a lot of content to find something suitable.
One great Rainbow Dash and Soarin love fanfiction is 'A Skyward Bond'. It beautifully depicts their relationship development from friendship to something more. The author does an excellent job of showing their shared love for flying and how that becomes a connection between them.
There are quite a few out there. You can start by looking on popular fanfiction websites like Fimfiction. Some stories might focus on their relationship development leading up to the kiss, while others could be part of a more complex plot.
The two main places to look for Rainbow Dash and Soarin fanfics are Fanfiction.net and AO3. Fanfiction.net has been around for a long time and has a huge number of fanfics. However, AO3 is also great because it has a more user - friendly interface and better tagging system. You can search specifically for Rainbow Dash and Soarin fanfics using the search bar on these sites and then filter the results according to your preferences, like by rating or length of the story.