/ Colorado ice
Having had a look online, there seems to be a fair amound of 4s and 5s, but I've not come across much easier.
There is a ton of climbing around Colorado in the 3-4 range. How long were you thinking of going for, and at what time of year?
If it's a longish trip then a couple of days or a week at the Ouray ice park will get you more confident and comfortable on steeper ice, likely making the rest of the trip more enjoyable. Not to mention is a ton of fun in it's own right. http://ourayicepark.com/ is worth a look.
There are a season's worth of classic routes in the vicinity as well, from easy single-pitch routes a few minutes from the road to longer classics like stairway to heaven in Eurika (definitely a route you should get on if you're feeling good on WI4, if it's in good nick). Easyish to find partners, too, if you're flying solo.
Best of luck.
Was thinking of a week in Ouray, then going further afield to see what's what.
I've done a couple of week long trips to Rjukan and a week in Cogne, so I'm thinking that 3-4 is probably my ability/size of testicals limit :)
Photos to whet your appetite...
Elsewhere on the site
This Winter Conditions page gives a summary of what is being climbed at the moment, what is 'in' nick and what the prospects are... Read more
The Kendal Mountain Festival 2014 proved once again to be a busy and inspiring four days of films, photos, music, art... Read more
The Women's Mountain Equipment Cho Oyu Jacket is the perfect choice for female mountaineers an explorers who... Read more
Backpackers want an extremely liveable and lightweight tent at good price. MSR answers the call with the Elixir 2 tent and... Read more