Truex continued to drive with a cast on his right wrist. He fractured it during an accident two weeks ago at Bristol.
Logano's 22nd-place run barely earned him the last top-10 in points spot in the Chase. He topped Gordon by only one point to get into the playoffs for the first time.
"To get into the top-10 and get our three bonus points there, it was huge," said Logano, who is in his first year with Penske. "These last three, four weeks have been very stressful. Feels like a big weight has been lifted off your shoulders to get in this thing. Now we can reset our goals towards the championship. Got a good shot at it. Ready to have some fun now."
Gordon rebounded from a two-lap deficit early in the race to finish eighth. He had made the Chase in each of the previous seven seasons.
"It's unfortunate," Gordon said. "We haven't had the kind of year that this team is capable of, and that's where our focus is these next 10 races is just to know that we put in every bit of effort we possibly could. We fought through a lot of things. It wasn't pretty, but we were getting it done until that caution came out, and we still could have made it in."
Busch's second-place run moved him up two positions in the standings to eighth. This will be his seventh appearance in the playoffs. Busch, the 2004 Cup champion, became the first driver from a single-car team to qualify for the Chase. He is driving for Furniture Row Racing this season before he moves over to Stewart-Haas Racing next year.
"Well, how about them apples?" Busch said. "Unbelievable. The way this team has grown, what we've been able to accomplish, it's an amazing feeling. We achieved something very special tonight."
Edwards claimed his second victory of the season and the 21st of his Sprint Cup career. He won in March at Phoenix. Edwards ended the regular season atop the rankings, one point ahead of Jimmie Johnson, who finished 40th due to a handling issue throughout the race.
"The last three weeks have been spectacular," Edwards said. "Had an extremely fast race car at Bristol. Atlanta went well the first half of the race. To come here, have another week where we run up front, win the race, this is great."
After finishing 14th, Kasey Kahne made it into the Chase with a wild card due to his two wins this season. Kahne had clinched at least a wild card prior to Richmond. He was attempting to get in the playoffs with a top-10 spot and therefore use his victories for bonus points.
The 10-race Chase begins next weekend at Chicagoland Speedway. Matt Kenseth claimed the first seed after winning the most races this season with five. He finished sixth at Richmond.
"We've had really a terrific 26 weeks, led some laps, fortunate enough to win some races," Kenseth said. "Excited to be up on top. Looking forward to Chicago and kicking off."
The Chase seedings are: Kenseth (2015 points), Johnson (2012), Kyle Busch (2012), Kevin Harvick (2006), Edwards (2006), Logano (2003), Greg Biffle (2003), Bowyer (2000), Dale Earnhardt Jr. (2000), Kurt Busch (2000), Kahne (2000) and Truex (2000).
Johnson has now finished 28th or worse in the last four races. The five-time series champion had to start from the rear of the field since he missed Friday's qualifying. His wife, Chandra, gave birth to their second daughter early Friday morning at a Charlotte, N.C. hospital.
Just past the halfway point, Johnson experienced a tire problem and had to spend a short period of time behind the wall for repairs. He later cut a tire and made contact with the wall.
"Unfortunately tonight here at the track, things did not go well," Johnson said. "We would literally wear the right-front tire off the car as the night would go on. Start off kind of fast, run through the right-front tire, had some issues there."
Johnson had been the points leader since the first weekend in April when he won at Martinsville Speedway.