Snowdonia Half Marathon
- Total distance: 21.1 km
- Location: Llanrwst
- Race Date: 9 May 2027
- Finish rate: 100%
- Nearest Station: Llanrwst (0.6 km)
- Night Running: 0% in darkness
- Pacing Complexity: High (52/100)
Snowdonia Half Marathon
- Distance
- 21.1 km
- Total ascent
- 724 m
- Cut-off
- 3h 30m
- Town/Village
- Llanrwst
- Date
- 9 May 2027
Overview
No overview text has been written for this race yet.
Quick Facts
- Entrance Cost: Unknown
- Organiser: Run Wales
- Start Town: Llanrwst
- Dogs Allowed: Unknown
- Start Date: 9 May 2027
- End Date: 9 May 2027
- Start Time: 9:00 AM
- Final Cut-off: 3h 30m
Navigation
- Type: Unknown
- Closest Train Station: Llanrwst
- Distance from Start Line: 0.6 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 is mainly paved road (66%), with gravel (30%) making up most of the rest. 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. Uphills are predominantly on paved road (74% of ascending sections).
Snowdonia Half Marathon has 13.9 km of paved road, this is in the top 32% of all our races.
- Paved Road66% · 13.9 km
- Gravel / Track30% · 6.3 km
- Trail / Path4% · 0.8 km
- Rocky0% · 0.1 km
Distance
21.6 km
Ascent
724 m
Descent
721 m
High Point
320 m
Compared against 10 other races of a similar distance, Snowdonia Half Marathon has more total elevation gain than 70% of them, and more elevation gain per kilometre than 70% of them — hillier than most races of this distance.
Source: GPX Data
Gradient
9.65%
Average climb gradient
Do you have experience of moderate climbs like Snowdonia Half Marathon's, which average 9.65%?
Snowdonia Half Marathon's climbs average 9.65%. If your training never rehearses sustained climbing at that gradient, race day will be the first time your legs meet it.
6.06%
Average descent gradient
Do you have experience of moderate descents like Snowdonia Half Marathon's, which average 6.06%?
Snowdonia Half Marathon's descents average 6.06%. 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
Snowdonia Half Marathon scores 52/100 for pacing complexity, rated high.
Similar-distance races score a median of 18/100 (5 races compared).
Snowdonia Half Marathon 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 Snowdonia Half Marathon?
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.
