Hopefully June got you started on your mileage goal (I'm at 120 miles myself right now!) and if you meet the challenge of 300 miles by august 12th you will get a 300 mile club SWEATSHIRT. Once July rolls around you should be thinking about running hard 1-2 days/week to start tuning your body up to run faster. Long slow distance is fine in June, but July means more speed/hills/tempo runs too.
happy training and cya Wed!!