The former Commonwealth Games marathon runner, who now competes in the over-50 category, won by nearly a minute.
Hall, running for the Devon-Somerset Fire & Rescue Service, finished the new course in a time of 1:18.12.
Second home was Torbay Athletic Club’s David Tomlin, who clocked 1:19.05.
Tamar Trotters’ Simon Yeo was third in 1:20.27, Erme Valley’s over-50 star Neil Holmes was fourth in 1:22.00, with Plymouth Harriers’ Dave Knight fifth in 1:25.08.
The women’s race was won by Truro’s Isobel Wykes, who came home in 1:30.59.
Tamar Trotter’s veteran international Anne Luke, who competes in the over-55 category, was second in 1:32.27, with Fetch’s Vikki Thompson third in 1:33.09.
Nearly 400 runners finished the race.
FULL RESULTS HERE http://www.tavy13.co.uk/2015individualresults.pdf