Velines Station is approximately 5 miles from the venue. From Paris Montparnasse, there are 14 trains a day to Velines that take between 3h 20m and 4h.
https://www.thetrainline.com/en/train-times/paris-to-velines
Bordeaux St-Jean Station is approximately 40 miles, or a 45m - 1h drive, from the venue. From Paris Montparnasse, there are normally 20 trains a day to Bordeaux St- Jean that take between 2h and 2h 30m.
Bergerac Airport is 28 miles, or a 35-45 minute drive from the venue. There are common routes to Bergerac connecting through San Francisco SFO, Washington IAD, and New York JFK.
Bordeaux Airport is approximately 45 miles, or about a 1h drive, from the venue. There are many direct flights from the US to Bordeaux including from Washington DC, Dallas, Denver, and Chicago. In addition, there are 20 flights per day between Paris and Bordeaux, should you instead connect through Paris.