Hollidaysburg, PA, United States · Saturday, July 10, 2027

Fixed Distance 100K

Ironstone 100 km Race

277 days away

100 km Distance

not publishedn/a Climbing

5.0 est Grit · Challenging

Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.

40.4273° N, 78.3889° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~77 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, July

Daytime high 29°C

Night low 17°C

Rainfall Showers likely

Daylight 14 h 54 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 386 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	100km	77	Scott Lesh · 13:57:14	Justyna Wilson · 14:21:05
2025	100km	54	Raymond Stoltzfus · 14:40:39	Kellie Seaton · 17:37:22
2024	100km	43	Michael Busada · 14:36:50	Mary Elizabeth Kowalski · 17:35:32
2023	100km	42	Raymond Stoltzfus · 14:14:32	Mary Elizabeth Kowalski · 17:16:18
2022	100km	31	Cory Johnston · 16:08:37	Mary Elizabeth Kowalski · 17:36:59

The field grew 43% between 2025 (54) and 2026 (77). 18% of the 2026 field were women.

DUV results for the 2026 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 100 km of trail.

Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Flask capacity for 100 km, without the bounce.
Headlamps 100 km almost certainly means running into the night.
Accessories Chafe and blisters end more 100 km races than fitness does.

Asics

Trabuco Max 2

★★★★★ 4.7

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Tailwind