Pinnacle road will be closed for part of tomorrow for the point to pinnacle. This is from the Police site:

Friday, 16 November 2012 - 12:24pm

On Sunday, 18 November 2012, the annual Garmin Point to Pinnacle Run and Walk will be held in the Sandy Bay, South Hobart and Mt Wellington area.

This event will commence at Wrest Point Casino at 7.00am for walkers, and 8.00am for runners. The route will be Sandy Bay Road, Davey Street, and Huon Road to the top of Mount Wellington, and will conclude at the summit by 12.30pm.

In accordance with Section 56A of the Vehicle and Traffic Act 1999, Tasmania Police advise of the temporary closing of the following roads to facilitate this event:

Drysdale Place
Sandy Bay Road from Drysdale Place to Byron Street (north bound lanes only)
Byron Street from Sandy Bay Road to Davey Street (north bound lane only)
Davey Street from Byron Street to Romilly Street (right lane only)
Huon Road from Romilly Street to Pillinger Drive
Pillinger Drive
Braken Lane, and
Pinnacle Road.
Roads will only be closed whilst participants are on that section of roadway, or approaching such. Vehicular traffic wanting to travel on or across the event route will be affected.

In the event of inclement weather, and the event cannot finish at the summit of Mount Wellington, road closures may need to be extended to allow runners to return to the Casino.

Police will be in attendance to manage traffic, and will direct traffic away from the event route.

Any queries should be directed to Radio Dispatch Services on (03) 6230 2111.