Question

How does the escape velocity of venus compared to that of mars (site 1)

Answer 1

mars is a little farther from sun than venus

Answer 2

The escape velocity of Earth is 11 Km/sec
Escape velocity of Venus is 10.3 Km/sec.
While the escape velocity of Mars is 5 Km/sec.

The Ratio of escape velocity of Venus is to mars 
2:1 (approx.)

Hope this helps...