Partly cloudy throughout the day with a chance of rain throughout the day.
Light Rain
81%
Wind
19mph
Gusting to
44mph
Light Rain
81%
Wind
19mph
Gusting to
41mph
Details
Light Rain
81%
Wind
17mph
Gusting to
38mph
Light Rain
81%
Wind
19mph
Gusting to
39mph
Light Rain
81%
Wind
19mph
Gusting to
42mph
Light Rain
81%
Wind
19mph
Gusting to
41mph
Light Rain
90%
Wind
18mph
Gusting to
43mph
Light Rain
90%
Wind
18mph
Gusting to
41mph
Light Rain
90%
Wind
18mph
Gusting to
43mph
Light Rain
90%
Wind
19mph
Gusting to
42mph
Light Rain
90%
Wind
17mph
Gusting to
41mph
Light Rain
90%
Wind
17mph
Gusting to
36mph
Pre-Race
Race
Post-Race
Training Metrics and Recovery Insights, Beautiful AMOLED Display. Garmin Forerunner 265 Running Smartwatch.
When you buy through our links, we may earn a commission.
Wanna to know when the weather changes? .
Race Overview
The inaugural Snowdonia Marathon was held in 1982, and was conceived as a dramatic alternative to the numerous city and town races becoming so popular. The demanding and spectacular route, encircling Snowdon, Wales’ and England’s highest peak, has given the event a unique place in the annual marathon calendar ever since.
WikipediaFAQ
When is the 2025 Marathon Eryri (Snowdonia Marathon)?
The 2025 Marathon Eryri (Snowdonia Marathon) will be held on Saturday October 25, 2025.
Marathon Eryri (Snowdonia Marathon) Course Map
Loading Course Map...
Marathon Eryri (Snowdonia Marathon) Weather History
Marathon Eryri (Snowdonia Marathon) Weather Averages
Average Temp: 51°, Average Low: 47°, Average High: 54°
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | 51° | 52° | 52° | 53° | 53° | 53° | 52° |
| Feel | 49° | 50° | 51° | 51° | 52° | 52° | 51° |
| Rain | - | - | - | - | - | - | - |
| Wind | 20mph | 20mph | 21mph | 21mph | 23mph | 22mph | 22mph |
| Dew | 47° | 47° | 47° | 47° | 47° | 47° | 47° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2024
Oct 26, 2024
Becoming cloudy in the afternoon with rain.
Low: 39°, High: 55°, Moderate Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 51° | 54° | 55° | 55° | 55° | 55° | 54° |
| Rain | light | - | - | - | - | - | - |
| Wind | 15mph | 18mph | 22mph | 20mph | 20mph | 21mph | 16mph |
| Dew | 48° | 48° | 47° | 48° | 48° | 49° | 49° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2023
Oct 28, 2023
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 49°, High: 54°, Moderate Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 53° | 53° | 54° | 54° | 53° | 54° | 53° |
| Rain | - | - | light | light | light | - | - |
| Wind | 12mph | 12mph | 11mph | 11mph | 12mph | 6mph | 7mph |
| Dew | 48° | 48° | 49° | 49° | 49° | 47° | 46° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2022
Oct 29, 2022
Partly cloudy throughout the day with rain.
Low: 52°, High: 63°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 59° | 59° | 60° | 61° | 63° | 61° | 61° |
| Rain | light | light | light | - | - | light | light |
| Wind | 10mph | 11mph | 10mph | 11mph | 22mph | 22mph | 28mph |
| Dew | 55° | 56° | 57° | 58° | 56° | 58° | 56° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2018
Oct 27, 2018
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 40°, High: 43°, Moderate Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 34° | 33° | 35° | 34° | 35° | 35° | 35° |
| Rain | - | - | light | - | - | - | - |
| Wind | 21mph | 22mph | 20mph | 20mph | 20mph | 17mph | 15mph |
| Dew | 32° | 31° | 32° | 31° | 31° | 31° | 31° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2017
Oct 28, 2017
Partly cloudy throughout the day with afternoon rain.
Low: 49°, High: 55°, Light Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 54° | 54° | 55° | 55° | 55° | 54° | 55° |
| Rain | - | - | light | - | - | - | - |
| Wind | 18mph | 20mph | 15mph | 17mph | 19mph | 20mph | 23mph |
| Dew | 53° | 52° | 52° | 53° | 53° | 53° | 53° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2016
Oct 29, 2016
Cloudy skies throughout the day with afternoon rain.
Low: 51°, High: 55°, Light Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 53° | 53° | 54° | 54° | 53° | 54° | 53° |
| Rain | - | - | light | - | - | - | - |
| Wind | 10mph | 10mph | 10mph | 10mph | 10mph | 11mph | 10mph |
| Dew | 53° | 53° | 53° | 52° | 52° | 51° | 50° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2015
Oct 24, 2015
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 46°, High: 54°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 44° | 44° | 43° | 43° | 50° | 50° | 43° |
| Rain | - | - | heavy | - | - | - | - |
| Wind | 9mph | 8mph | 11mph | 15mph | 17mph | 16mph | 15mph |
| Dew | 44° | 46° | 45° | 44° | 43° | 42° | 41° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2014
Oct 25, 2014
Partly cloudy throughout the day with rain in the morning and afternoon.
Low: 50°, High: 55°, Light Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 53° | 54° | 54° | 55° | 55° | 54° | 54° |
| Rain | - | - | light | - | - | - | - |
| Wind | 25mph | 25mph | 24mph | 24mph | 28mph | 25mph | 26mph |
| Dew | 48° | 48° | 49° | 49° | 48° | 48° | 47° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2013
Oct 26, 2013
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 52°, High: 56°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 54° | 55° | 55° | 55° | 56° | 56° | 54° |
| Rain | - | - | light | - | - | - | - |
| Wind | 23mph | 23mph | 29mph | 33mph | 35mph | 39mph | 39mph |
| Dew | 49° | 50° | 49° | 49° | 49° | 48° | 51° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2012
Oct 27, 2012
Partly cloudy throughout the day with morning rain.
Low: 37°, High: 45°, Light Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 37° | 38° | 40° | 40° | 41° | 41° | 40° |
| Rain | - | - | - | - | - | - | - |
| Wind | 11mph | 12mph | 9mph | 10mph | 8mph | 8mph | 6mph |
| Dew | 30° | 31° | 32° | 32° | 32° | 31° | 31° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2011
Oct 29, 2011
Partly cloudy throughout the day with rain.
Low: 49°, High: 57°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 51° | 52° | 53° | 53° | 55° | 55° | 57° |
| Rain | - | - | light | - | - | - | - |
| Wind | 26mph | 28mph | 27mph | 28mph | 30mph | 28mph | 32mph |
| Dew | 49° | 50° | 51° | 52° | 53° | 54° | 54° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2010
Oct 30, 2010
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 44°, High: 52°, Moderate Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 42° | 45° | 51° | 52° | 52° | 50° | 50° |
| Rain | - | - | light | - | - | - | - |
| Wind | 18mph | 11mph | 23mph | 20mph | 18mph | 12mph | 14mph |
| Dew | 45° | 46° | 46° | 46° | 46° | 47° | 45° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2009
Oct 24, 2009
Partly cloudy throughout the day with rain.
Low: 52°, High: 59°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 59° | 58° | 58° | 57° | 56° | 55° | 55° |
| Rain | - | - | moderate | - | - | - | - |
| Wind | 39mph | 32mph | 39mph | 37mph | 40mph | 41mph | 38mph |
| Dew | 58° | 56° | 55° | 54° | 54° | 53° | 54° |
| RunScore |
Marathon Eryri (Snowdonia Marathon) 2008
Oct 25, 2008
Partly cloudy throughout the day with rain.
Low: 49°, High: 56°, Heavy Rain
| Time | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM | 5PM |
|---|---|---|---|---|---|---|---|
| Temp | |||||||
| Feel | 40° | 50° | 51° | 51° | 52° | 52° | 52° |
| Rain | - | - | moderate | - | - | - | - |
| Wind | 48mph | 46mph | 40mph | 40mph | 41mph | 42mph | 40mph |
| Dew | 45° | 47° | 48° | 48° | 50° | 50° | 51° |
| RunScore |