Free tables Natural 20 — skill checks

Natural 20 Table — Athletics Skill Checks, d20

A free d20 table for a natural 20 on a Athletics check in 5e. Twenty outcomes, from solid to legendary.

A natural 20 on a skill check is not a critical success in fifth edition — criticals apply to attack rolls only, and a 20 on a check is simply a 20. Which is why a legendary roll so often feels like nothing happened. This table gives it somewhere to land.

Twenty results written for Athletics specifically. A legendary Athletics roll has nothing in common with a legendary roll at anything else, which is why there are eighteen of these and not one.

Roll d20 when a player rolls a natural 20 on a skill check and succeeding quietly would be a waste.

Severity tiers

Each result names its tier, so you can see at a glance how bad a roll was without decoding a colour.

Solid 1–10 — Cleanly done, with something small to show for it.
Impressive 11–17 — Better than anyone expected. Momentum, or an obstacle gone.
Legendary 18–20 — Scene-shaping. The kind of success people repeat afterwards.

The table

20 results. Roll d20.

d20	Result	Tier	What happens
1	Clean Line	Solid	You make it look effortless. No extra effect — but describe it well, because everyone saw.
2	Momentum	Solid	You may move 5 feet further than the effort strictly required.
3	Sure Grip	Solid	Nothing you were carrying is dropped, disturbed, or left behind.
4	Quiet Work	Solid	You manage it in near silence. The exertion imposes no penalty on Stealth.
5	Room to Spare	Solid	You could bring one ally through, over, or across with the same effort.
6	Fast	Solid	It takes roughly half the time you expected. The DM should say what that buys you.
7	Solid Footing	Solid	You have advantage on the next Dexterity saving throw you make before your next turn.
8	Read the Weight	Solid	You learn something useful about what you moved — what's behind it, how it's held, whether it's trapped.
9	Handhold Found	Solid	Anyone following your route has advantage on the same check.
10	Set the Anchor	Solid	You can secure a rope or brace the thing open. It stays that way without you holding it.
11	Effortless	Impressive	The attempt costs you no movement at all this turn.
12	Carried Two	Impressive	You bring two allies through with you, at no cost to their movement.
13	Broke It Open	Impressive	Whatever you forced is now permanently open or ruined. Nobody has to check again.
14	Vaulted Past	Impressive	You end up anywhere you choose within 10 feet — including somewhere that would normally need a second check to reach.
15	Impressed Someone	Impressive	Any creature watching that respects physical strength shifts its attitude toward you one step for the better.
16	Perfect Timing	Impressive	You may immediately make one attack or one object interaction as part of the same motion.
17	Opened the Way	Impressive	The route you made is usable by the whole party for the rest of this scene without further checks.
18	Feat of Legend	Legendary	You do something that should not be possible at your size and strength, and the DM should let it stand. You also have advantage on your next Athletics check this scene.
19	Immovable	Legendary	Until the end of the encounter you automatically succeed on Strength saving throws against being moved, knocked prone, or grappled.
20	The One They'll Talk About	Legendary	You do the impossible thing and somebody who matters sees it. You succeed at one additional related task in this scene without rolling, and the DM should have word of it reach you again in a later session.

Questions

Is a natural 20 a critical success on a skill check?

Not by the rules. Criticals apply to attack rolls. A 20 on a check is a 20 — which is why a spectacular roll so often produces a shrug. This table is the house rule that fixes that.

Does a natural 20 automatically succeed?

No. On an ability check there is no automatic success — if the DC is 25 and your total is 22, you failed with a 20.