← i1 leaderboard

WHITEHEAD, SHANNON

Race i1 · Bib 1041 · Male · iTRA PI 447
Status
Finished
Total time 3h18m53s
Finished at Sun 09 Aug 10:18:53
Effort today
Current Performance Index: 489
iTRA PI 447 · running 9% above career level — PB pace
Aid station schedule
START · 0.0 km ✓
out07:00:00
HQ_IN · 10.0 km · Current PI 447 ✓
Section time 1h50m37s
Section 10.0 km · +1116 / −123 m
expected at08:51 cut-off at10:50
in08:50:37out08:54:47
0 min FASTER than expected
Dwell 4 minutes.
Section PI 496 — at career level
FINISH · 21.7 km · Current PI 481 ✓
Section time 1h24m06s
Section 11.7 km · +147 / −1139 m
expected at10:39 cut-off at13:30
in10:18:53
21 min FASTER than expected
Section PI 480 — at career level
Current PI (Performance Index) blends how the runner is going right now with their career score: about 70% their most recent section and 30% their career iTRA PI. It updates every section and is the level we use to predict the next one. (Before the first section it's just the career iTRA PI; a runner with no career PI uses their latest section alone.)

Section PI is what that one section implies on its own — that single leg's pace against the reference, ignoring the rest of the race.

Read either against the runner's career iTRA PI: a higher number means they ran harder than their score predicts; lower means slower (tired, or pacing on purpose).

Expected at is our predicted arrival at the next aid station: its terrain-adjusted (“equivalent”) distance run at the Current PI's pace, plus a small allowance for fade because runners slow over a long day. It refreshes each time a section finishes.