Yes, that's possible already. Please navigate to the top of the Tracks list first. Touch the search bar and enter any filter term you find appropriate. LapTimer will reduce the list to the entries matching your filter. LapTimer uses a full text search for the term entered. Please keep in mind descriptions are all in English, so search terms (e.g. country) need to be entered in English too. "Germany" e.g. yields all tracks in my country.