Six-time European champion Fontana prevailed in a photo finish after a fast and tactical contest.
The race also generated the best atmosphere of the weekend at the EnergieVerbund Arena, thanks to the presence in the final of Dresden-born Anna Seidel (GER) who learned her craft on this ice. She took the bronze medal, much to the crowd’s delight.
Fontana’s win was some compensation for Saturday’s races: she had crashed in the 1500m final, and only just stayed on her feet over cracked ice to take silver in the 500m.
“I didn’t fall over, so that was a good step!” she said afterwards. “This weekend has been a good test as to how I was feeling on the ice as we get close to the Olympics. I’m not at 100 per cent yet.
“I wasn’t disappointed yesterday. The 1500m I thought I was going to win but then I crashed - but I wasn’t upset because I’d done a good race.
“In the 500m I was trying to pass, but the ice cracked. I just stayed on my feet and I was happy with silver. And I was pleased with this race.”
Lara van Ruijven won the B final.