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People · United States

Rune Thomas Coulbourne

5×5 · top 1.3% of 40,792 all-time · competing since October 2022 · 2022COUL02

Rune Thomas Coulbourne has been competing for 4 years. His best event is the 5×5: a personal-best single of 48.24, set at Texas Championship 2025, puts him in the top 1.3% of the 40,792 people who have ever been ranked in the event, and 117th in the United States. Until October 2015, no official 5×5 solve in the world had been that fast. Across 38 competitions since October 2022, he has put 1,511 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 12% around a typical one, steadier than 68% of the 35,811 competitors with ten or more counted rounds. His 3×3 best has come down from 26.31 in October 2022 to 8.56, a 67% improvement. Rune has entered 38 competitions, more competitions than 99% of everyone who has ever competed.

5×5
best event — top 1.3% of 40,792 all-time
48.24
signature single · Texas Championship 2025
1,511
official solves on the record
12%
solve-to-solve spread · steadier than 68% of the field

Standing, event by event

vs everyone ever ranked
EventPB singlePB averageAll-time standingUnited States
5×548.2456.97
top 1.3%117 / 9,401
4×430.4236.41
top 3.1%504 / 19,072
3×38.569.83
top 3.9%2,181 / 59,724
2×22.264.36
top 6.7%2,653 / 40,951
6×61:53.741:56.43
top 8.6%302 / 4,196
7×73:01.663:16.25
top 11.0%300 / 3,184
Pyraminx5.869.63
top 18.9%5,048 / 28,708
3×3 one-handed22.9530.24
top 28.6%3,699 / 15,683
Skewb8.7611.25
top 46.8%8,285 / 18,907
Megaminx2:40.50—
top 66.2%5,071 / 7,841

Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.

The line so far

Cube More in Ardmore 2022: 26.31Texarkana Winter 2022: 19.80Cube With Intention in Denton 2022: 24.09Cube Against Cancer Texas 2023: 15.87Houston Spring Side Events 2023: 14.52CubingUSA Southern Championship 2023: 16.83Space City Summer 2023: 14.67Brazos Cubing Fall 2023: 13.54Lawton OKtoberfest Fall 2023: 12.75Texas Championship 2023: 10.82DFW Cubing Fall 2023: 11.61Space City Winter 2024: 12.98Cube Against Cancer Texas 2024: 10.96Turning at Tompkins Spring 2024: 12.20Don't Pop Austin 2024: 10.09Louisiana Championship 2024: 10.93Humble Cube Rumble Summer 2024: 10.96Cube More in Ardmore 2024: 9.90Brazos Cubing Fall 2024: 9.28Austin NxN 2024: 10.46Texas Championship 2024: 9.57Space City Winter TX 2025: 9.55Austin Cubing Limits Winter 2025: 10.32Cube Against Cancer Houston 2025: 9.18Austin Spring Open 2025: 8.62Cube More in Taylor 2025: 9.43DFW Cubing Summer 2025: 9.51CubingUSA Southern Championship 2025: 8.63Houston Back to School 2025: 9.37The Heart of Texas Fall 2025: 9.52Space City Fall TX 2025: 9.15Texas Championship 2025: 8.68Brazos Cubing Winter 2026: 8.89New Braunfels Comal Cubing Classic 2026: 9.53Cube Against Cancer Houston 2026: 8.76GAN Southern Championship 2026: 8.92Hillister Cube Hustle 2026: 8.568.5626.311 Oct 202218 Jul 2026

Best single per competition, 3×3. Faster is higher — the axis is the right way up.

The story so far

Competitions

Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.

The circuit

The people whose scorecards keep turning up next to his.

Next targets

  • A sub-40 5×5 single — 68 people have one; it is 8.24 away.
  • A sub-30 4×4 single — 2,388 people have one; it is 0.42 away.

Targets move as he improves.