The plan was to have here a quarterly resume with the latests videos from TrTr or Technic Race competitions, being promoted by different LUGs.
Somehow it has not been done, and the last resume published (also the first one...), was for the 3rd Quarter of 2009. 
Anyhow we won't want to finish another year, without highlighting some of the great competitions that have been happening all over the world, in 2010!
Czech Republic
And because we are in the winter, there is actually snow almost everywhere (not here...), lets start with the LEGO Technic Rallies organized by Kostky club members.
The 4th competition from the LTR series, happened in January - Rally White Hill
The cars in competition.
The pole!
The race results.
And the overal LTR ranking, after 4 races.
Because snow is something very unusual in the country where I live, I always got fascinated seeing LEGO models rolling on the snow.

Here we just have sun, beaches and thus boring things...
There was a 5th race in April (Rally Bimox), but from this I've not found any video footage.
The pole!
The race results.
And the overal LTR ranking, after the 5th race.
Shmade is consistently taking the leadership, in the competition.
But has we have seen from previous years, the Czech group also organize their own competitions in the TrTr category. 2010 was not an exception and they have organized their third official Truck Trial Championship, comprising 5 races.
Below a couple of videos from their 2010 races. A promo video and a crash compilation.
You may also find a ton of very nice nature photos, from the Czech 2010 LEGO Technic TrTr (LTTT) races, under this
Brickshelf folder.
Just some appetizer...
It looks the challenge is getting though!!
Poland
And again
LUGPol should have been the most active community, organizing TrTr competitions.
Here we get an overview from all their competitions in 2010, from the excellent videos produced by Sariel.
#1/2010 Grand Prix Mazovia - Warsaw, Poland - April 10th, 2010
13 Trucks, 4 sections
#2/2010 Grand Prix Mazovia - Warsaw, Poland - April 24th, 2010
13 Trucks, 4 sections
#3/2010 Grand Prix Mazovia - Warsaw, Poland - May 22th, 2010
11 Trucks, 4 sections
#4/2010 Grand Prix Mazovia - Warsaw, Poland - August 7th, 2010
9 Trucks, 4 sections
#5/2010 Grand Prix Mazovia - Warsaw, Poland - September 4th, 2010
#6/2010 Grand Prix Mazovia - Warsaw, Poland - September 2th, 2010
Hungary
MALUG members also did a few TrTr competitions in 2010.
Here we the videos from their most successful event.
The pole!
Hungarian Truck Trial Meeting - July 17th, 2010
Belgium
Also the
BeLUG members organized a TrTr training day, for a later competition.
Obstacles all made of LEGO bricks. Some really interesting ones!
Belgian Truck Trial - Training Day - August, 2010
Let us know if there are videos from some other races or TrTr competitions that have been happening at different places/LUGs, and I'll gladly keep updating them into this post.