Details:

Eurostar For Eurostar train travel between London
and Paris or Brussels, earn:
e 750 miles per paid segment in
Premium First Fare
e 500 miles per paid segment in
First Class Full Fare
e 250 miles per paid segment in
Second Class Full Fare

Additionally you can redeem UA M+ miles for award travel on the EuroStar...


Destination Award Miles needed
Between Paris/Brussels Standard
or Disneyland Paris and London Saturday Stay* 10,000
Standard 15,000
First Class 20,000
Premium First 30,000
*Minimum stay of one Saturday night is required.