Ski tunnel
Ski tunnels or indoor ski arenas make it possible to do cross-country skiing year-round. Except for the shape of the building they are similar to Indoor ski slopes. The temperature inside the tunnel is kept at a constant temperature of a few degrees below zero Celsius to prevent snow from melting.
Tunnels
Active
| Location | Name | Length | Opened |
|---|---|---|---|
 Sotkamo |
DNA Ski Tunnel | 1,200 m (3,937 ft) | 1997 |
| Jämijärvi |
Jämi Ski Tunnel | 1,250 m (4,101 ft) | 2002 |
| Uusikaupunki |
Vahterus Ring and Vahterus Ring II | 1,000 m (3,281 ft) | Nov 2005 |
| Paimio |
Ski Tunnel Paippi and Ski Tunnel Paippi II | 700 m (2,297 ft) | before 2006 |
| Leppävirta |
Vesileppis Ski Arena | before 2006 | |
 Torsby |
Torsby Skidtunnel & Sportcenter | 1,287 m (4,222 ft) | 16 Jun 2006 |
 Oberhof |
DKB Skisport-Halle Oberhof | 1,754 m (5,755 ft) | 24 Aug 2009 |
| Helsinki |
Ylläs-Halli and Ylläs-Halli II | 1,100 m (3,609 ft) | 1 Sep 2009 |
Future
| Location | Name | Length | Opening |
|---|---|---|---|
 Planica |
Planica Nordic Center | Jun 2016 |
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