You'll notice that it's not even. It's that unevenness that creates such a wealth of music. Notice too that I haven't mentioned notes here, just intervals. The exact notes of the scale depend on where you start counting. There are twelve starting places, therefore twelve scales slash keys.
All twelve are exactly the same.
Three, Five and One. Now, if you can get to the point where you can instantly see the ones, threes and fives of any chord on your fretboard, you'll be able to adjust them according to the song you're playing. Once you know that minor chords are just like major chords with a flatted three, that an augmented chord sharps the five, that a major seventh chord contains a flat one, that a sus four chord sharps the three to a four, etc. Know where the ones, threes and fives, you know where everything else is. I find it easier to locate by looking for the next fret down from the One than thinking 'seven' and counting up from who knows where.