Live examples
Real races. Real maps. See for yourself.
The best way to judge a race map is to use one. Fly the route, read the elevation, open an aid station, and imagine it on your own event page.
La Misión Serra Fina
TRAIL ULTRA · SERRA DA MANTIQUEIRA, BRAZIL

Big mountains, remote checkpoints, and hours between aid stations. The kind of course athletes want to study before they commit, now explorable from the event's own website.
While you're in there, try this.
Hit play on the flyover and let the camera take you through the course. Hover the elevation profile to feel the climbs. Open an aid station to see the amenities, cutoffs, and notes. Then picture that on your own site, with your sponsors on the course.
Now do it with your route.
Start the trial, drop in your GPX, and see your own course in 3D in minutes.