Discount on Eurostar?

No. And your pass is not good on the Eurostar. Only discount available are advance purchase discounts which anyone can get.

But...with enough advance notice, you can get super cheap fares. When and where are you going? I suggest deleting the double post under "General Europe", too; makes for some confusion amongst the posters...

Thanks for the feedback. I found the youth vouchers with the discounted rates which saved me a bunch over the regular fare I almost paid. Thanks for the help.

Just a clarification: The Eurostar does provide a "discount" rate for Eurorail pass holders. But the discount is less than standard discounts for advance purchases.