UPDATE: Registration opened at midnight April 1 for the Wharf to Wharf Race -- scheduled as always for the fourth Sunday in July. By 8 a.m. 600 prospective runners had already registered. By 11 a.m., that figure had reached nearly 3,000.
Every year, the 15,000 slots are filled -- usually by mid-May. Judging from the first-day numbers, it may sell out quicker.
To register, go to the Wharf to Wharf website.