Lonely Planet review for Tours
Mo i Rana is the most convenient base for exploring the fjords to the west (although they are still some 110km away). For tours to the Svartisen glacier, there's no public transport from Mo but you can hire a bike from the tourist office and pedal the 32km each way to the ferry point beside Svartisen lake to explore Østisen. The tourist office also does a pair of evening guided walks (around NOK80).
Choose either the one-hour town walk or, for spectacular views, the 90-minute mountain walk (don't be put off by the term; it won't overtax you). Sign up by 16:00 on the day.