Magnit, which recently overtook rival X5 as Russia's biggest grocery chain by revenue, said the July result brought sales for the first seven months of the year to 322 billion roubles, up 31.2 percent.
The company, also Russia's biggest food retailer by store count, opened 68 stores in July, bringing its total to 7,484.
Magnit recently lifted its full-year 2013 sales growth forecast to 27-30 percent, compared with about 34 percent in 2012.
