For the OSL-NRT segment I will use a Scanrail pass to go to Helsinki via Lapland, rail to St Peteresburg, Moscow then the Trans-siberian to Vladavostock, ferry to Japan & rail to NRT.

The only flights that came up to ANC were DFW-SEA-ANC but the SEA-ANC segment was on Alaskan Airways which I couldn't use on a RTW ticket.

When I first started planing the trip there was a flight DPS-MEL but no longer.
One of the goals of this trip was to fill in the 4 states that I have never visited Hawaii, Washington, Oregon & Alaska so will either use Amtrack or bus from LAX-SEA then then there is a 7 day cruise of the Inside Passage out of Seattle.

I just finished a 6 mo bus tour of Central America if you are interested http://blogs.bootsnall.com/busman7