What are the most effective routes on Zwift for virtual sprint races, and how do you determine the ideal route for a sprint competition? Are there specific routes that favor certain rider types, such as those with high acceleration or sustained power output? How do you balance the need for a challenging route with the need for a fair and safe racing environment? Do you prioritize routes with technical sections, such as hairpin turns or cobbled roads, or do you prefer routes with longer, more straightforward sections that allow riders to reach high speeds? Are there any routes that are notoriously difficult to sprint on, and if so, what makes them so challenging? Do you think the route selection for sprint races should be based on real-world courses, or can Zwifts virtual environment allow for more creative and innovative route designs? How do you think the rise of virtual sprint racing will change the way we think about route design and course selection in general?