Learn English – “Shoulder” or “shoulders”… which one should I use

"Long past" and "distant past" are usually used to discuss time, not distance. "Well past" can be used to discuss either time or distance. As Weather Vane suggests, "far past" is usually used to discuss distance, not time.

The "corners" of soccer fields are important in the game. For example, "corner kicks" often result in goals. Thus, it is not clear that the example sentence refers to a "street corner" instead of a corner of a soccer field.

First of all, it would probably be simpler if you left it as multiple sentences. However, if you're set on not doing so, you could try something like the following:

When I went to church last Sunday, a large explosion that occurred outside was heard by me and everybody else inside.

Note that the main clause of the sentence has been turned into a passive construction so that me and everybody else can be used.

I don't think it would sound as good, but it is possible to keep the active voice and use both I and we:

When I was at church last Sunday with the regular parishioners, we all heard a large explosion from outside.

This mix of I and we doesn't sound so strange in the single sentence because you introduce the other people (the regular parishioners) before using the plural pronoun.