Get some people to come and help you. They don't have to be horse people either. Tell them to spread out and the plan is to corner all (or at least the horse you want) in order to catch him. If the horses get near you, get big and wave your arms to try and stop them. In a big pasture with more horses it will be easier with more people. If they keep escaping and running, make them run. They wanted to run anyways, so might at well get them running - but still try to corner them. Once the horse(s) are cornered, one person slowly walk up to the horses. Kick some rocks, look around, stop, pick something up, walk backwards towards them, sit down, anything to let the horses know that you aren't going to harm them and you are their friends. Then once you touch the horse or put a rope around his neck, it's all over and you won!
Just try something like that. Our horses used to run all the time, we did this procedure with just two of us and it worked out really well. It might take some time, but once one is caught, put them in a smaller area maybe.
If he still runs, just keep doing this.
🔫 Don't Tread On Me 🐍