Possible Clues:

• Zany, get splashing in river
• Fizzy tangy energy drinks unknown for long-distance runner
• Get drunk with zany banker
• River in China; get zany (anag.)
• River in China
• China's longest river, an anagram of 'Get zany'
• Asian river, the world’s longest flowing through only one country
• Longest river entirely within a single country
• Get kicks with zany foreign banker
• Chinese river (Z, not S)