Jelle's Marble Runs

The Marble League (formerly known as the MarbleLympics) is an annual series featuring marbles competing in Olympics-inspired events. Sixteen teams compete against each other to win medals across multiple events, including hurdles, long jump, and funnel endurance. The champions of the Marble League are crowned based on the aggregate points from all events.

At its inception in 2016, 16 teams were invited to compete in 12 events. Each team consisted of four marbles of matching colors and patterns. Starting in 2017, the qualifiers were held in advance of each Marble League edition, with the top four teams from the previous edition automatically qualifying for the subsequent edition. Beginning in 2018, the Marble League features a host team that takes one of the four automatic qualification spots alongside the top three teams from the previous edition. The 2018 Marble League was the first (and currently the only full-length) winter edition, featuring events such as speed skating, ice hockey, and snowboard cross. Other changes included the addition of a fifth team member. In 2019, the MarbleLympics changed its name to Marble League due to trademark issues, increased the number of events to 16, and added a coach marble for each team.

The 2020 Marble League faced cancellation due to a lack of funding, but a fully paid sponsorship from Last Week Tonight with John Oliver was announced on May 17, 2020 for all 16 events, with $5,000 going to food bank charities in the event winners’ name and $20,000 donated to the International Rescue Committee in the overall winners’ name, allowed for the 2020 edition to commence as planned.[18][19][20]

The Marble League Showdown was introduced in 2019 as the lower division for teams who did not qualify for the year's Marble League championship. The Showdown effectively serves as the preliminary round for the next year's Marble League, where top-ranked teams will be given a chance to compete in the next year's qualifiers.

Starting from 2020, JMR occasionally announces special Marble League tournaments during the off-season. Unlike the usual yearly tournaments, these tournaments are much shorter, with no more than five events, and teams participating in the tournament are picked via invitation.

On 13 December 2020, the Marble League Winter Special was announced. This tournament will be contested on five events taken directly from the 2018 Marble League edition. Sixteen teams have been invited to participate in this special tournament.

The Marble Rally (formerly known as the Sand Marble Rally) is a series of off-road marble races, where individual marbles race against each other down a sand course that has been manually constructed. The courses feature a variety of obstacles that will impede competing marbles on their way to the finish line. Marbles used for the Marble Rally are larger than marbles used for the Marble League, with a diameter of 25 mm compared to the Marble League's 16 mm marbles. Starting from the 2017 edition, top-ranked marbles automatically qualify for the next year's Marble Rally championship.

The 2020 edition was initially delayed due to the ongoing COVID-19 pandemic, but the first six races had been filmed and were eventually released weekly from 15 September 2020 to 20 October 2020. The next six races are being planned to be released in 2021 after a mid-season break.

The Marble Rally Showdown (formerly known as the Sand Marble Rally B-League) was introduced in 2018 as a lower-division series of races for marbles who did not qualify for the Marble Rally championship, giving those marbles a chance to qualify for the next year's championship. Top-ranked marbles automatically qualified for the next year's Marble Rally championship, while other marbles may be required to attend qualifiers.

The 2020 Marble Rally Showdown was cancelled altogether following an announcement from the JMR, though no reason has been given yet. Marbles eligible for the 2020 Marble Rally championship were instead selected via invitation.

Marbula One is a series of circuit-based marble races, where marbles race multiple laps around a racetrack made of Quercetti Big Marbledrome tracks with custom paper stock add-ons, as well as a conveyor belt that returns all marbles back to the top. As its name suggests, this series is directly inspired by the Formula One motor racing championship. Each race event in this series is referred to as Grand Prix, and includes a qualifying session to determine who will qualify for the main race event, as well as the starting grid.

The first edition of Marbula One premiered in February 2020, shortly before the COVID-19 pandemic. Sixteen teams from the Marble League were invited to compete in the inaugural edition, which consisted of eight events. The qualifying session for this edition was a simple single-round session, with each marble given one flying lap to complete. The points system for this edition was also adopted directly from Formula One, including a bonus point for setting the fastest lap time during the main race event.

The second edition of Marbula One premiered in November 2020, and consisted of 12 events, an increase from the previous edition's 8. The number of teams participating was also increased to 20. To accommodate this change, the qualifying and points systems were updated. The new qualifying session format is divided into three rounds, with each marble given one flying lap to complete in the first round, but the number of marbles eligible for the main race event remains 16. The next two rounds have the top half of the qualified marbles from the previous round race along the course in a two-lap race-off.

The first half of the second edition, consisting of six races, was broadcast weekly from 7 November 2020 to 12 December 2020, with the second half of the edition expected to be broadcast from 12 February 2021 after a mid-season break.

Marbula E is a circuit-based marble racing series directly based on the Formula E racing championship. Created as a spin-off of Marbula One, this series is sponsored by Envision Virgin Racing. It features marble teams named after real Formula E teams (unlike other series, which feature fictional teams) and racetracks closely based on real-life ePrix.[21][22][23] The first episode premiered on 18 April 2020, consisting of a race in a recreation of the Paris Street Circuit, and was narrated by British professional Formula E commentator Jack Nicholls. JMR commentator Greg Woods later joined Nicholls from the second race in a circuit based on the Seoul ePrix.

To celebrate the channel's 1,111,111 subscribers milestone, Last Marble Standing was announced on 21 May 2020. This tournament, sponsored by Arla Foods UK's Cravendale, featured six new dairy-themed teams, and included six events. The tournament was won by Graze of Glory, who had dominated the entire tournament by staying in first in the standings for all but one event, winning three gold medals and one silver medal in the process.[24][25]

The Hubelino Tournament was a tournament series contested on courses constructed with Hubelino marble tracks and using 20 mm marbles. The tournament consisted of multiple events run on Hubelino marble tracks, including funnel endurance, which was eventually added to the Marble League. This series was discontinued after the 2018 edition.

Only two teams from this series have made an appearance in the Marble League so far, namely the Minty Maniacs and the Bumblebees. The Black Jacks and the Golden Orbs (previously known as the Golden Wisps) also participated in the qualifiers for the 2018 Marble League, but did not qualify for the main tournament.