Negative split : finishing faster than you started
RunA pacing strategy where the second half of the race is faster than the first.
On a marathon or Ironman, starting 5-10% below target pace preserves glycogen and form. The second half then becomes reachable without blowing up. Starting too fast ("positive split") typically costs 10-30 min in a late-race collapse.
In TriPaced:
TriPaced won't push aggressive splitting if you lack the base. But on prescribed long sessions, the last 30 min can be tagged "progressive" : you learn to execute a negative split before race day.
Source Daniels J., Daniels' Running Formula (3rd ed., 2013) - marathon pacing strategies