Tour de France Stage 18 Challenge Question

Today’s Tour de France Challenge Question is:

What is the greatest finish line time gap recorded by a successful solo break in Tour de France history, by whom, and what stage of what year?

• Tweet your answer to @stravaHQ
• We’ll post the winner on our blog

First correct answer wins.

What’s the Tour de France Challenge? We’re running a daily challenge for each remaining day of the Tour de France. Here’s how it works:

• Subscribe to our blog RSS feed, so that you can get notified as soon as a new challenge is posted.
• We’ll post a new challenge question daily with various prizes ranging from Strava t-shirts to Garmin Edge 500s!
• Once a new challenge is posted, follow the instructions on how to participate — we’re running some of the challenges on Twitter and some on Facebook.
• Send us your answer to the challenge question.
• We’ll post the winner on our blog.

Congratulations @ozchrisb for being the first to tweet the answer I was looking for.
Answer:  ”José-Luis Viejo, who beat the peloton by 22 m 50s in the 1976 stage Montgenèvre-Manosque.”

This is the widely accepted answer; however, I feel more research is warranted as there may be some harder to find data in the early tours which surpass that.  I’ll hit the books and report back here what I find.  - feel free to post comments with answers and sources.

Thanks for all your answers.