About Us

ULTRA4 Racing is the official web site of Hammerking Productions. The founders of Hammerking are the force behind the toughest one-day off-road race on the planet: King of The Hammers.  

King of The Hammers takes place each year in February, on public lands in Johnson Valley, CA.  The race has evolved from 12 teams racing for bragging rights and a case of beer, to more than 300 teams competing before more than 35,000 fans in person and nearly 500,000 watching online. Due to the incredible success of King of the Hammers, and to give these cars and their drivers a chance to showcase their unique capabilities, Hammerking has formed the ULTRA4 Racing series.

The series challenges drivers to compete in a wide variety of terrain from endurance desert racing to competition-style rock crawls to short course racing. ULTRA4 Racing currently has 8 races throughout the United States and ULTRA4 Europe currently has 4 races throughout Europe and plans to expand in the future. 

If you have any questions regarding ULTRA4  Europe, please contact [email protected]

Maxxis King of France
L Aérodrome, France

This will be the 2nd annual event held on an airfield in the French countryside. This course is fast and brutal, wih a spectator-friendly short course area filled with a variety of challenging 4WD obstacles. The course features several serious rock obstacles, tree-lined sections and deep water crossings.  All classes including UTVs will compete at this first race in the 2017 ULTRA4 Europe season. 

Weekend pass: 10€
Free for kids under 12 years old

On-site ammenities include: bivouac, camping & restaurant

For information contact Entre Ciel et Terre : +

Maxxis King of Wales
Walters Arena, Wales

The original and oldest race on the ULTRA4 Europe circuit, this course has been a part of the ULTRA4 Europe series since 2012. The terrain is gnarly Welsh forest interspersed with rocky river beds, quarries, and the main arena where all competitors start and finish their laps. The event is held at Walter's Arena, a 1,600-acre motorsports complex in a reclaimed coal mine in South Wales. The ULTRA4 unlimited class, the legends and modified classes will all be racing at this event. The course is a grueling 16.5 KM course that competitors will tackle repeatedly over multiple stages throughout two days of competition. This year will feature more kilometers than any year prior with between 148KM and 181KM depending on class. 

Amenities for race teams include: camping, showers, bathrooms, catering, licensed bar, jet wash

The nearest village to Walter's Arena is Glyn Neath which has the following resources available: fuel filling station, mini supermarket, take away food

Maxxis King of Portugal
Vimioso, Portugal

The Ultimate Iberian Race. Known as the race of the rocks, this race encompasses more than 150KM over 2 days of racing and multiple stages.  One of the most well-known features of this course is called Dinosaur Eggs, which consists of geological rock formations that spread across the landscape; these large oval rock formations prove challenging for the most advanced ULTRA4 vehicles. This will be the 5th annual ULTRA4 Europe race held in Vimioso, Portugal. The entire town welcomes race teams like family with communal dinners served throughout the event. 

Amenities on site for teamsinclude: camping, showers, toilets, catering, licensed bar, jet wash

Maxxis King of Britain
Bovington, UK

King of Britain is the fastest course on the European calendar and the racing will take place in stages over the course of 2 days.  The tracks and obstacles at Bovington Tank Training Grounds are designed to stop tanks so it’s a true test for ULTRA4 vehicles.  It is also the longest race to round off the Maxxis Ultra4 European Championship.  The diversity of the terrain in Bovington is a true showcase for ULTRA4 unlimited vehicles, the terrain ranges from high-speed graded track, tight, tree-lined fores trails, loose river beds, and drainage gullies. This will be a great grand finale to a challenging season. 

Mileage for this course will be total more than 300KM for the unlimited ULTRA4s, 260 KM for 4800 (legends), 231 KM for 4500 & 4600 (modified and stock vehicles). 

Amenities on-site include: Camping, Bathrooms, Showers, Catering, Licensed Bar, Jet Wash area (teams need to supply own jet wash)