A little over 2 km.
You can't travel directly from Euston Square station to Victoria. If you go to Euston Station - a short walk - it's only four stops on the Victoria line.
About 4 miles.
It is about 3 miles from Liverpool Street to Euston.
What is the distance from euston station to marblearch
About 2 hours - but it depends on traffic conditions at the time.
It's about ½ mile (700 metres). 10 minute walk.
Walk.It's almost no distance - about 50-100 yards. :)
4.7 miles by road.
The distance between Euston Station and Waterloo Station in London is approximately 2.3 miles if you follow the A4200 which would take about 10 mins (excluding traffic). Alternately, you can follow the A4200 and then switch to the A40 which is approximately 3 miles and would take around 13 minutes without traffic.
About 5 miles
Assuming you meant public transport: You can get a Thameslink train from Gatwick Airport Train Station to St. Pancras station. Then a short walk to Euston station where you can catch a Virgin Trains service to Stafford (the main station in Staffordshire).