I walked 1km in 4 minutes 38 seconds + Achieved a new PB

A few months ago, I walked extremely fast for a 3km TT to set a record and finished in the 15-minute range.
So this time, I wanted to properly set a record by walking 1km as a TT as fast as possible, so I held a stopwatch instead of my phone.
It seems a bit too much to try and walk under 4 minutes 30 seconds just yet, but I managed to come in under 4 minutes 40 seconds,
and I feel so good to have achieved a new PB! haha