Looking forward ... to a time when we have round trip opportunities .... and I've headed this one "rail by rail"

From TransWilts stations

Steam - http://www.steam-museum.org.uk/
Coate Water - http://coatewaterrailway.webs.com/openingtimesandprices.htm
Swindon and Cricklade - http://www.swindon-cricklade-railway.org/
Lackham - http://www.lackhamcountrypark.co.uk/attractions/railway.asp
TrainWest - 9th & 10th April 2011 - http://www.ukmodelshops.co.uk/events/4014-Bentley_Model_Railway_Group_Trainwest_2011
Bulkington - http://www.westwilts-communityweb.com/site/Bulkington/Bulkington-Railway.htm
Blue Circle - http://www.wiltshiretimes.co.uk/news/latestheadlines/4866048.Grant_is_a_relief_for_railway_club_near_Westbury/
Longleat Railway - http://www.longleat-railway.com/

And some interesting destinations just a bit further afield

Didcot Railway Centre - http://www.didcotrailwaycentre.org.uk/
Yeovil Railway Centre - http://www.yeovilrailway.freeservers.com/
Eastleigh Lakeside - http://www.steamtrain.co.uk/
Paultons Park - http://www.miniaturerailwayworld.co.uk/PaultonsPark.html
Hythe Pier - http://en.wikipedia.org/wiki/Hythe_Pier,_Railway_and_Ferry
Lodmoor Park - http://www.miniaturerailwayworld.co.uk/WeymouthBay.html