Choose the race before chasing the number

Start with a time that works for you, then look at distance, climbing and race format.

Search for an event, route or world in Horizon. Use Today or Tomorrow for a quick selection, or broaden the calendar when you are planning ahead. Remove filters one at a time if nothing matches.

Select the PEN you intend to enter before comparing its registered field. A PEN is the event’s start group, usually identified by a letter. An eCR level describes sporting strength among the riders with available data. These are different pieces of information: a letter alone does not tell you how hard a field will be.

Read what is known, and what is still missing

Route and terrain

The route name and world locate the event. Terrain adds context when it has been identified. New routes can appear before their geometry is verified.

Distance and climbing

Kilometres and elevation gain describe different parts of the effort. Missing values remain unknown; do not interpret them as zero or as proof of an easy route.

Registered riders

These are the riders known at the snapshot time. Late signups, withdrawals and non-starters can change the field.

eCR and Race//10

Use these alongside the route, rating history and available rider information. They add sporting context and do not replace Zwift’s entry categories.

A calendar entry can be visible before its rider analysis is ready. A missing forecast does not mean the event is cancelled. Revisit it closer to the start.

Use forecasts as preparation

Open the event analysis and choose the right PEN. When sufficient data is available, compare riders, favourites and estimated outcomes. Open individual profiles to put a rating or a recent performance into context.

The forecast is in beta. A probability or estimated finishing range is an analytical estimate, not a guaranteed result. Sparse signups, incomplete route information and limited rider history reduce what the analysis can tell you. Tactics and events during the race still matter.

Follow, enter, race, return

1. Save a short list

   Follow a few events in Horizon and find them again under your followed races. This selection stays in the browser you use; it does not create a Zwift registration or a notification.

2. Recheck before the start

   Review the current signup snapshot, your PEN and the route details. Use Join on Zwift to open the official event page and complete registration with your Zwift account.

3. Return after the finish

   Browse recent results, open your rider profile and see the available performance history. If a result is missing or incorrect, report it through the contact page.