While in a ride it’s hard to spot a sprint start. Add a start banner arch as well as a chequered end banner to make it clear where they start.
Also add a ‘coming up in 20m’ type notification so you’re ready to sprint
Please vote existing suggestions up, no need for a new one.
https://support.zwift.com/hc/en-us/community/posts/214932963-KOM-and-Sprint-banner
Excellent suggestion. Especially 20m notification.