Sirona 100 - 100 Mile
- Total distance: 160.9 km
- Location: Barmouth
- Race Date: 14 Aug 2027
- Format: 1 day
- Entry Cost: £205
- Nearest Station: Barmouth (0.5 km)
- Pacing Complexity: High (51/100)
Sirona 100 - 100 Mile
- Distance
- 160.9 km
- Total ascent
- 5,177 m
- Cut-off
- 50h
- Town/Village
- Barmouth
- Date
- 14 August 2027
- Entry cost
- £205
Overview
No overview text has been written for this race yet.
Quick Facts
- Entrance Cost: £205
- Organiser: Pegasus Events
- Start Town: Barmouth
- Dogs Allowed: Unknown
- Start Date: 14 Aug 2027
- End Date: 14 Aug 2027
- Start Time: 6:00 AM
- Final Cut-off: 50h
Navigation
- Type: Unknown
- Closest Train Station: Barmouth
- Distance from Start Line: 0.5 km
Eligibility
- Minimum Age: Unknown
- Gender Eligibility: All genders
- Minimum Entry Criteria: Unknown
Toilets
- Hand Washing Beyond Sanitiser: Unknown
- Period Products Provided: Unknown
- Female Only Toilets: Unknown
Family & Spectators
- Baby Changing at Start: Unknown
- Family Friendly Spectator Areas: Unknown
- Flexible Deferral or Cancellation: Unknown
Safety
- Marshalls at Isolated Areas: Unknown
- Safeguarding and Reporting Policy: Unknown
- Can Hide Location from Public Tracking: Unknown
Terrain & Elevation
The course covers a genuine mix of surfaces, with trail (26%) and grass (25%) being the most common and neither clearly dominating. The terrain is highly fragmented, switching roughly every kilometre. This demands constant mental engagement and limits the ability to build a sustained rhythm from surface consistency alone. Ascending sections cover a varied mix of surfaces with no single type dominating the climbs. Descents cover a variety of surfaces with no single terrain type dominating.
Sirona 100 - 100 Mile has 36.4 km of trail / path, this is in the top 22% of all our races.
- Trail / Path26% · 36.4 km
- Grass25% · 35 km
- Paved Road20% · 28.4 km
- Gravel / Track16% · 22.5 km
- Sand8% · 11.5 km
- Off-road / Unknown4% · 5 km
- Rocky1% · 1.6 km
Distance
162.2 km
Ascent
5177 m
Descent
5142 m
High Point
279 m
Compared against 13 other races of a similar distance, Sirona 100 - 100 Mile has more total elevation gain than 92% of them, and more elevation gain per kilometre than 92% of them — significantly hillier than typical for its distance.
Source: GPX Data
Gradient
8.53%
Average climb gradient
Do you have experience of moderate climbs like Sirona 100 - 100 Mile's, which average 8.53%?
Sirona 100 - 100 Mile's climbs average 8.53%. If your training never rehearses sustained climbing at that gradient, race day will be the first time your legs meet it.
3.3%
Average descent gradient
Do you have experience of gentle descents like Sirona 100 - 100 Mile's, which average 3.3%?
Sirona 100 - 100 Mile's descents average 3.3%. If your training never rehearses sustained descending at that gradient, the downhills will empty your quads long before the finish.
Source: GPX Data
Climate
Pacing Complexity
Sirona 100 - 100 Mile scores 51/100 for pacing complexity, rated high.
Similar-distance races score a median of 41/100 (5 races compared).
Sirona 100 - 100 Mile is among the more pacing-complex races at this distance. The challenge is not just the total distance or ascent — it is the repeated need to change effort level. A fixed pace target is unlikely to work here. The dominant source of complexity is terrain type changes, which means preparation should include training runs that deliberately mix different intensities in sequence.
Source: GPX Data
Aid Stations
No aid station data available for this race yet.
Are you ready for Sirona 100 - 100 Mile?
Compare it to a race you've already run, or connect Strava and see the three biggest gaps between your training and what this course will ask of you.
