# 9Round Kickboxing Fitness > Workout sessions last 30 minutes and deliver high intensity exercise with no fixed class times or preregistration needed. The atmosphere stays laid back and easy going, welcoming anyone fitting fitness into a busy schedule. Weekly challenges add a competitive edge to the straightforward vibe. Source: https://www.atly.com/location/9RoundKickboxingFitness23 - Address: 4924 Hampton Ave, St. Louis, Missouri, United States - Phone: +13142691399 - Website: https://www.9round.com/StLouisMOHamptonAve ## What people say - "This gym offers quick, challenging workouts that make you sweat." ## Good to know - There are no fixed class times, making it easy to fit into any schedule. - No preregistration is required for classes at 9Round. - Each workout guarantees to burn at least 300 active calories. - Workouts last 30 to 40 minutes and are high intensity. - Weekly challenges help motivate participants and enhance competition. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.