|Television||The Amazing Race 9|
Stanford University admission campaign
MacNiven first received attention in 1998 when, while a senior at Woodside High School in Woodside, California, he launched a political-style campaign to supplement his application to Stanford University, where he had wanted to go since the seventh grade. After turning in his early admission application, MacNiven held a press conference in front of Stanford's Bowman Alumni House. For the rest of the week, MacNiven and his volunteer staff of friends and family wore sandwich boards and passed out "Tyler MacNiven for Stanford Student" leaflets after school, among other traditional campaign activities. MacNiven said, "There's so many outstanding people applying to Stanford these days that I actually want to be `out standing' in front of them, to show them that I really do have a passion to go there." Despite having a 4.05 grade point average, playing singles for the varsity tennis team and being student body president at his high school, MacNiven was rejected. He said, "My goal was to make every possible effort, leaving no options untested. That's what the campaign was really about." He was told by the admissions officer that he was noticed and that his campaign was not detrimental.
MacNiven graduated from UC Santa Cruz with a BA in politics, completing semesters abroad in Hungary and on a Semester at Sea. He claims to have been the last student of Tom Lehrer. During a short internship in South Africa, he produced the promotional video for his host NGO.
Kintaro Walks Japan
In 2004, MacNiven walked the length of Japan over 145 days. He created a one-hour documentary of the trek, titled Kintaro Walks Japan. MacNiven cited three reasons for the journey. On his first trip to the country in 2002, he fell in love with the country and had to return. It was on this trip that a friend nicknamed him "Kintarō," which means "Golden Boy," because of his blond hair. Lastly, MacNiven hoped to impress a girl.
Unable to find a distributor for the documentary of the trek, MacNiven burned 1,000 DVDs and began hawking copies of the film on the streets of San Francisco and at a restaurant  his father owns. One day, George Strompolos, an executive from the nearby Google campus, dropped by. “Dad showed the movie to him,” MacNiven said. “He watched it and said, ‘This is exactly what we need.’” Today roughly 500 people watch the film every day at Google Video.
Kintaro Walks Japan premiered at the Santa Cruz Film Festival  in 2006 and was voted by the audience as "Best of Fest". It received the highest winning vote in the 5-year history of the festival.
The Amazing Race
In 2006, MacNiven appeared as a contestant on the ninth edition of the American television series The Amazing Race. He and his teammate, B.J. Averell, who MacNiven met during a "Semester at Sea" four years earlier, beat out ten other teams to win the show's $1 million prize over Eric & Jeremy. BJ and Tyler, as they were identified on the program, were nicknamed "the hippies" by the other teams.
BJ and Tyler came in last in two legs of the race, but both legs were non-elimination pit stops. Host Phil Keoghan said, "They enjoyed every single moment they were on this race, whether they were in first or in last. They kept their spirit all the way to the end." “If it’s this successful to be hippies, we might as well stay hippies,” Tyler said at the finish line in Colorado. He also added, "BJ and I approached each country with wide eyes and enthusiasm and joy and a huge spirit of adventure and willing to share that with everybody we met. There's so much in this world. We might as well just take advantage of as much as we can and give back as much as we can and that's important. 'Cause that's how it all works." 
- “Stanford says no to Tyler MacNiven, but he's upbeat, may reapply later.” The Almanac, December 23, 1998.
- Oxfeld, Jesse. “They'll Try Anything.” Stanford Magazine, April/May, 1999.
- Delevett, Peter. “High school senior `runs' for Stanford.” Silicon Valley/San Jose Business Journal, November 13, 1998.
- “Our Town: Around Town.” Palo Alto Weekly, March 24, 1999.
- “BJ & Tyler.” CBS.com.
- http://www.buckswoodside.com/stories/tomlehrer.shtml Tom Lehrer's Last Class
- Serota, K.C. “Work and Travel.” I'REEE Times, Volume 2, Issue 2, December 2002.
- White, Patrick. “Online filmmaking has arrived.” Columbia News Service, February 14, 2006.
- Bayne, Richard J. “'Hippies' win 'Amazing Race'.” Times Herald-Record, May 18, 2006.
- CBS. “'Team Hippie' Takes 'Amazing Race 9'.” CBS News, May 18, 2006.
- “A frosty finish for 'The Amazing Race'.” Chicago Tribune, May 17, 2006.
- “BJ & Tyler Win Million Dollar Prize.” WISH-TV, May 18, 2006.