2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change 1.4% versus flat · net elevation -0 m
Decision summary
Lower than 83% of comparable mapped races
14:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for TARC Stone Cat Trail Festival Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The TARC Stone Cat Trail Festival Ultramarathon route has 1,094 m of ascent, 1,095 m of descent and an estimated 1.4% grade-adjusted pace penalty versus a flat route.
The TARC Stone Cat Trail Festival Ultramarathon route starts at Paul F. Doyon Memorial School, 216 Linebrook Road, Ipswich, Massachusetts 01938 and finishes at Paul F. Doyon Memorial School, 216 Linebrook Road, Ipswich, Massachusetts 01938. Underfoot, expect trail - a mix of double track and single track with roots and rocks throughout, on a 12.5-mile loop. It passes Willowdale State Forest and carriage roads. A deliberately low-cost, no-frills volunteer-run trail festival.
Drop bags / gear can be left at the start/finish area; runners pass it every 12.5-mile loop. Personal tents up to 10x10 are permitted with volunteer approval. 2. Pacers are not allowed for any distance. A deliberately low-cost, no-frills volunteer-run trail festival.
The stored route produces 1,094 m of ascent, while a source states 335 m. GPS sampling and elevation models can produce different totals, so both are labelled rather than combined.
Its normalised GAP factor is 1.4% slower than a flat course, with about 1094 m of total ascent.