Just because the weather all of a sudden got nice does not mean your fitness has improved (sorry).
It’s great to get outside and enjoy the outdoors and I’m glad people are eager to do so. The problem is the tradeoff. One really long run on that first really nice day might cost you a few runs in the near future since you will likely do some damage by not following gradual progress. Some people are ok with this. It's like eating a really bad food or drinking a bunch of alcohol. It feels great when you are doing
Instead of getting over-excited about the weather and tripling your weekly mileage in one day, consider asking yourself what you can do to attain the fitness required to do the runs you desire. Ask yourself if this is a reasonable and sustainable approach. If you need help, ask a coach or post a comment below.
Enjoy the nice weather and be smart.