The idea of the internal Grand Prix competition is to gain points by participating in as many races as possible within the list, over a 12 month period (you don't have to do them all but you won't gain points for the ones you skip). The points are higher for certain races and we use an age grade system to calculate them.
There are two different series as we know that not everyone can do more than 12 races in a year:
ELR Silver Series (12 races)
5 best ELVIS races out of 8
6 best Chingford or Sunday League races (out of 12)
1 10k (road officially measured)
ELR Gold Series (19 races)
6 best ELVIS races out of 8, including running or volunteering at Valentines
8 best Chingford or Sunday League races out of 12, including at least 3 of each league
1 10k (road officially measured)
1 half marathon (road officially measured)
1 marathon (road officially measured)
1 long-distance cross-country (Ilford 10, Benfleet 15 or Orion 15)
1 Essex Way Relay
Obviously, you cannot be both a Gold and a Silver winner so if you have the highest number of points in both, the second best of the Silver one will then become the winner.
The points system can appear a bit complex, and is described in detail below for whoever is interested, but in a nutshell:
- For each eligible race, we will calculate a point score for the runner based on their time, age factor, and (in most cases) the median time of the race. Volunteering at Valentines or Chingford League Relays gives 100 points.
- For each race group (e.g. 5 out of 8 ELVIS, 1 out of 2 15mi XC), we will select the best races based on points scored. If a runner hasn't completed sufficient races, they will score zero for any missed races.
- The runner's score for the race group will be the sum of these race points.
- For each series, we will calculate the total score from the race groups, multiplied by a weighting (see below). The weighting ensures that we get a fair balance across the different types of race, especially in the gold series.
The scoring will be updated every month and on time for each newsletter and we will have three winners of each gender per series.
The competition will start on the 1st of October 2021 until 30th of September 2022 but will include the first race of the Chingford League on 18th of September 2021 at Hog Hill.
You do not need to do anything to participate apart from making sure that we have the results of your non-winter leagues/Essex Way/ELVIS races. However, you can let us know if you do not wish to be included in the monthly result ranking.
* Either running or volunteering at Valentines.
** Ilford AC 10 mile XC, Benfleet 15, or 2022 Orion 15. The extra Orion 15 race in November 2021 will not count for this competition, as it is primarily for people who entered the cancelled 2020 race (they will only open it to the public if there are extra spaces). Although the Ilford race is shorter than the other two, the scoring method (details below) accounts for that.
See Scoring - Race points calculation at the bottom of this page for details of scoring methods A, B & C.
The results tables below show the current standings in the 2021-22 ELR Grand Prix Silver and Gold series, followed by more detailed tables showing individual race results and corresponding scores. The results will be updated monthly. The pos.chg column shows the change in position since the previous month (N=new).
Note that the silver/gold summary tables show scores that are scaled by the number of races in the group/series and the race group weighting. The other tables show unweighted race scores. This is why, for example, the marathon scores are higher in the gold series tables than in the road race summary/details tables. See the articles at the bottom of this page for full details of the scoring method.
Please let Jacob or Alexandra know of any errors or omissions in the results.
Standings in the women's silver series, as of 26 November 2021:
Standings in the women's gold series, as of 26 November 2021:
Standings in the men's silver series, as of 26 November 2021:
Standings in the men's gold series, as of 26 November 2021:
Summary of points scored in open road races (10K, half marathon and marathon), up to 26 November 2021. Where a member has run more than one race of a given distance, their best score is taken. The scores differ from the tables above as they are unweighted (see Results - Overview above).
Scores for the open road races (10K, half marathon and marathon), up to 26 November 2021. Please note that races that are off-road or not officially measured are excluded, as per the Grand Prix rules (see Excluded Road Races below for further information). Second-claim members are also ineligible to score points in open races.
If you ran an eligible race but your result is not shown, please contact Jacob or Alexandra, or email firstname.lastname@example.org, and we will add your result to the ELR database and Grand Prix scores.
The following 10K, half marathon and marathon races have been excluded from the Road Race results above, as they do not meet the eligibility criteria that the race must be on road and officially measured. This rule is to ensure fairness and increase the variety of races that members need to run to score full points: there are plenty of off-road races in other sections of the series, such as many Winter League and several ELVIS races, and - for the gold series - the long-distance XC and Essex Way Relay.
If you think that a race listed here is in fact eligible, please contact Jacob or Alexandra, or email email@example.com, including any supporting information (e.g. web link showing road licence or measurement info).
Summary of race scores for the Winter League races, up to 26 November 2021. See posts below for further details of the individual Chingford and Sunday League races.
Individual scores for the Chingford League races:
Individual scores for the Sunday Cross-Country League races:
The first stage of the scoring is to calculate a point score for each runner in each qualifying race. Three different scoring methods will be used, depending on the race (see table above).
The score is based on age/gender-adjusted time, relative to the median time of the race. This method takes variations in course length and difficulty into account, and will be used for races where it is practical for us to download and process all results, including all ELVIS and winter league races.
Time = Runner's race time (or individual leg time in a relay)
GenAgeFactor = Conversion factor from runner's gender/age standard to mid-point between non age-adjusted male/female standards (lower number means higher points)
AdjTime = Time * GenAgeFactor
MedianTime = Median time of all runners in the race (all clubs, all categories)
Score = MedianTime / AdjTime * 100
GenAgeFactor is calculated as follows:
d = closest road distance to the race distance (doesn't need to be exact, as Method A is based on median time not age grade), e.g. 5km or 5mi
g = gender of runner
a = age of runner on date of race
AgeFactor(d,g,a) = age factor from age grading tables (1 until around age 30, gradually reduced above that age)
OCTime(d,g) = open class (adjusted world record) time from age grading tables
GenAgeFactor = (OCTime(d,M)+OCTime(d,F))/2 / OCTime(d,g) * AgeFactor(d,g,a)
The score is based on age grade percentage (similar to parkrun age grading). This method will be used for the open road races (10K, half marathon and marathon). Since these are accurately measured, there is no need for a course adjustment.
AgeGrade = OCTime / Time / AgeFactor * 100
Score = AgeGrade * AGScoreFactor
AGScoreFactor = 1.8. This is an adjustment factor to bring the scores in line with those of Method A (a score of 100 is average, whereas an age grade of 100 is world-leading). The value of 1.8 is close to the ratio of Method A scores to age grades for recent Roding Valley Half Marathon results (a representative road race entered mainly by local club runners); results from some other races were also analysed to ensure fairness. The same factor will be used for all races. The precise value isn't important (as everyone has the same adjustment); this is just to make sure that the weighting of races is not significantly skewed by the scoring method.
Time, OCTime and AgeFactor are as described under method A.
The score is based on position in the race with an age adjustment. This method will be used for races where no times are published, e.g. the Essex Way Relay.
GenPos = Runner's gender position in race (or individual leg position in a relay)
NumGenRunners = Number of runners of that gender in the race (or leg)
MaxScore = Score to be given to the first-placed runner (before age adjustment). This will be worked out by averaging the top score for a sample of races that used Method A, excluding the age factor. This calculation will be done later in the season, but before the first race that uses Method C; the website will be updated once calculated.
UnadjScore = 100 + (1 - (GenPos-1) / (NumGenRunners/2)) * (MaxScore-100)
Score = UnadjScore / AgeFactor
- For volunteers in the ELR-organised races (Valentines ELVIS and Chingford League Relays), 100 points will be awarded.
- The 2020 Age Grade tables at https://github.com/AlanLyttonJones/Age-Grade-Tables will be used, for both age factors and open class times.
Once the scores for each race have been calculated, the total score for the runner is calculated as follows:
1. For each race group (see table above), the scores of the best qualifying races are summed to give a total score for that group.
- If the runner didn't complete the required number of races, they score zero for any missed races.
- Each road race distance is a "group of 1", e.g. for the 10K score, the best single score of all 10K races run by that runner during the year (Oct-Sep) will be used.
2. Each race group total is weighted by dividing by the number of qualifying races in that group (e.g. 5 for the ELVIS races in the silver series) and multiplying by the group weighting (see table above).
3. For each series, the weighted race group totals are summed and then multiplied by the number of races in the series (12 for silver, 19 for gold). The multiplication (combined with the weighting in the previous step) ensures that series points are of the same magnitude as race points, for example if a runner completes all races in the competition and scores 100 points in every race, they will score 1200 points in the silver series and 1900 in gold.
A runner completes the following races:
- 5 ELVIS races, scoring 105 points in each race
- 6 Chingford League races, scoring 106 points in each race
- 2 Sunday League races, scoring 107 points in each race
- A 10K race, scoring 108 points
- A half marathon, scoring 109 points
Silver series score calculation:
- ELVIS group total = 105*5 = 525
- Winter Leagues group total = 106*4 + 107*2 = 638
- Score = (525/5*45% + 638/6*45% + 108*10%) * 12 = 1270.8
Gold series score calculation:
- ELVIS group total = 105*5 = 525
- Winter Leagues group total = 106*5 + 107*2 = 744 (*)
- Score = (525/6*25% + 744/8*35% + 108*7% + 109*8%) * 19 = 1343.4
(*) Only the best 5 out of the 6 Chingford League races count towards the gold score in this example, because at least 3 of each Winter League is required for full gold scoring (i.e. the 6th CL race isn't a substitute for the missed SL race).
1. The competition will run from 1 October 2021 to 30 September 2022, but will additionally include the first Chingford League race of the season, on 18 September 2021.
2. The competition is open to all members of ELR, who remain a paid-up member on 30 September 2022.
3. If a member joins the club after 1 October 2021, only races after their joining date will count towards the competition.
4. Second Claim members will only score points in races where they run for ELR, i.e. league/team races where their First Claim club does not compete; they will not score points in open races (10K, marathon, etc.).
5. Prizes will be awarded for the top three scorers of each gender in each series (gold and silver). Only one prize per member: the gold series takes precedence.
6. Members will automatically be included in the competition by finishing a qualifying race.
7. Any member may opt out of the competition by contacting firstname.lastname@example.org.
8. To ensure that all race results are included in the scoring, members are encouraged to sign up on Race Entries, and to check the competition results published monthly. This is particularly important for open road race results (10K, half marathon and marathon), which might otherwise be missed.
9. If a race in the competition is cancelled, the committee shall decide if any adjustments to the qualifying race list or weightings are needed to ensure fairness. In any event, we will ensure that runners can miss at least two races from each league in the silver series, or at least one race in each league in the gold series, without losing any points. Any such amendments will be posted on the ELR website and Facebook group.
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