I know this may sound like cheating, but it would be great if you could add a goal with a start date earlier than today.
Example: it just occurred to me on the July 4th weekend that I should try for 500 miles this month. I already have a 100-mile-per-week goal set, but because it's july 5th I can't set a monthly goal unless I want it to run 5th to 5th.
Thanks!