Mountain Bike National Championships happen year-round depending on country and discipline, but a majority of the cross country championships, among countries in the northern hemisphere, happen in July, with many on the third weekend of that month.
Late September is when many nations will hold their marathon national championships, as suggested by the UCI, while a few nations will wrap up their marathon championships at other times of the year.
Below is an updated index of the 2014 MTB National Championship coverage on Cyclingnews. Click on the appropriate link to access coverage for cross country, downhill, four cross, eliminator and marathon disciplines.
Australia: Cross country, eliminator and downhill, marathon
Austria: Cross country
Belgium: Cross country
Canada: Cross country and eliminator
Czech: Cross country
Denmark: Cross country
France: Cross country and downhill
Germany: Cross country
Great Britain: Cross country, downhill
Italy: Cross country
Netherlands: Cross country
New Zealand: Cross country and downhill
Norway: Cross country
Poland: Cross country
Spain: Cross country
South Africa: Cross country
Switzerland: Cross country, eliminator
United States of America: Marathon, cross country, short track and super D, downhill and dual slalom