Park. Pray. Run. Join the Rev. Bob Johnston for Holy Eucharist and prayer for participants in the BMW Dallas Marathon. The service is scheduled for 7 a.m., Dec. 10, in the chapel of Thanks-Giving Square, at 1627 Pacific Avenue in Dallas, just a few blocks from the marathon starting line. The service will conclude by 7:30 a.m. so runners can line-up before the race. All are invited.