How many chances does the batter have to hit the ball before running to first base?

You can reach base without a hit via the following: 1. Walk (aka Base on Balls) 2. Hit by Pitch 3. Fielding or Throwing Error 4. Passed Ball on Strike Three (The pitch gets away from the catcher after a swing and miss strike 3 and the batter can reach 1st base before the catcher throws to the 1st baseman) 5. Reach on Fielder's Choice (another baserunner is thrown out) That's all I can think of.