What Is a Crypto Bull Run? Definition, Phases and Examples
What is a bull run in crypto? A clear definition, the typical phases from accumulation to euphoria, real examples from 2013 to 2021 and how to stay safe.
A crypto bull run is a sustained period, usually lasting many months, in which prices rise strongly, optimism spreads and new buyers keep entering the market. Bull runs typically move through recognizable phases — quiet accumulation, an early uptrend, broad public participation and finally euphoria — before ending in a sharp decline into a bear market.
Understanding what a bull run is, and how it tends to unfold, helps you recognize where enthusiasm is coming from and avoid the classic mistake of buying the most when prices are highest. This guide gives a clear definition, describes the typical phases, walks through real examples up to mid-2025 and explains how to manage risk if another bull run arrives in 2026, 2027 or later.
Definition: What Counts as a Bull Run
"Bull market" is a general finance term for a period of rising prices and confidence; "bull run" is the more informal term crypto investors use for the same thing. There is no official threshold in crypto, but a bull run usually has:
- A sustained uptrend: prices make higher highs and higher lows over many months.
- Broadening participation: rising trading volume, new users and growing media coverage.
- Positive feedback: rising prices attract buyers, which push prices higher.
- Spillover: gains spread from bitcoin to larger altcoins, then to smaller, more speculative tokens.
The opposite is a bear market — a prolonged decline with falling confidence. Our guide to bull and bear markets in crypto compares the two in detail.
The Phases of a Bull Run
Bull runs do not follow a script, but past ones have tended to share a structure:
| Phase | What happens | Typical sentiment |
|---|---|---|
| 1. Accumulation | Prices move sideways after a bear market; patient buyers accumulate | Disinterest, disbelief |
| 2. Early uptrend | Prices break out and rise steadily; media still skeptical | Cautious optimism |
| 3. Public participation | Strong gains attract mainstream attention and new users; altcoins start to outperform | Excitement, fear of missing out |
| 4. Euphoria | Parabolic moves, celebrity promotions, flood of new tokens, heavy leverage | Greed, "this time is different" |
| 5. Distribution and reversal | Experienced holders sell into strength; a sharp drop marks the turn | Denial, then fear |
The phases are easier to label in hindsight than in real time. A sharp pullback can feel like the end when it is only a correction — or like a correction when it is the end.
Examples of Crypto Bull Runs
2013
Bitcoin went through two major rallies in 2013, the second peaking late in the year. It followed the first halving in November 2012 and coincided with growing global attention. The collapse of the Mt. Gox exchange in early 2014 marked the start of a long bear market.
2017
The 2017 bull run was driven by retail investors and the ICO boom, in which thousands of projects raised money by selling new tokens, often with little more than a whitepaper. Bitcoin peaked in December 2017, and Ethereum, which hosted most ICOs, rose many times over. Most ICO tokens later lost nearly all their value.
2020–2021
After the March 2020 crash, near-zero interest rates and stimulus helped fuel a broad rally. Companies began adding bitcoin to their balance sheets, DeFi and NFTs boomed, and memecoins surged. Bitcoin peaked in 2021, and the 2022 bear market followed, deepened by the collapses of Terra and FTX.
The 2024 cycle
US spot Bitcoin ETFs were approved in January 2024, and bitcoin set a new all-time high in March 2024 — before that cycle's halving, unlike earlier cycles. Further highs followed in late 2024 and into 2025. How this cycle develops is best judged from the live Bitcoin chart and historical data.
What Drives Bull Runs
Common ingredients across past cycles:
- 1Liquidity and interest rates: cheap money tends to support risky assets.
- 2Supply narratives: Bitcoin halvings reduce new issuance and attract attention.
- 3New access: exchanges, apps and ETFs make buying easier for new groups.
- 4A new story: ICOs, DeFi, NFTs, memecoins or tokenization pull in fresh capital.
- 5Social feedback: rising prices create headlines, which create more buyers.
Bull Run vs Relief Rally
Not every strong rise is a bull run. Bear markets often include relief rallies: fast rebounds of 30% or more that fade as selling resumes. Telling them apart in real time is hard, but a few differences help:
- Duration. A relief rally lasts days or weeks; a bull run builds over months.
- Structure. In a bull run, pullbacks stop above previous lows. In a relief rally, prices usually return to or below the prior low.
- Participation. Bull runs bring rising volume, new users and growing activity on-chain. Relief rallies often happen on thin volume, driven by short sellers closing positions.
If you cannot tell which one you are in, that uncertainty is itself a reason to buy gradually rather than all at once.
How to Manage Risk in a Bull Run
- Size positions so a fall of three-quarters, as in past bear markets, would not ruin you. See position sizing and risk management basics.
- Take profits in stages rather than hoping to sell the exact top.
- Avoid leverage; pullbacks of 20–30% inside bull runs regularly wiped out leveraged traders.
- Be skeptical of new tokens; most launched during past euphoric phases failed.
- Expect more scams: fake giveaways, phishing, impersonated support and "guaranteed return" schemes surge when prices rise. Read bull market scams.
Bottom line
A crypto bull run is a sustained, broad rise in prices driven by liquidity, narratives, new access and social feedback, moving from quiet accumulation to euphoria before reversing. Past examples in 2013, 2017 and 2020–2021 all ended in deep bear markets. Whether the next one comes in 2026, 2027 or later, knowing the phases helps you stay disciplined: buy gradually, avoid leverage and take profits before euphoria fades.
常见问题
What is a bull run in simple terms?
A bull run is a long period, usually many months, in which prices rise strongly and optimism keeps attracting new buyers. In crypto, bull runs have often produced very large gains, followed by sharp declines. The term comes from the image of a bull thrusting its horns upward, while a bear swipes downward.
How is a bull run different from a short rally?
A rally can last days or weeks and may happen inside a falling market. A bull run is a broader, sustained uptrend with rising highs and lows over many months, increasing participation and usually growing media attention. Bull runs include sharp pullbacks along the way, but the overall direction stays up.
How long do crypto bull runs usually last?
Past major crypto bull runs lasted roughly one to two years from the end of the previous bear market to the peak, though the most explosive phase was often much shorter. With only a handful of examples, there is no reliable standard length, and future cycles may differ.
Is a bull run a good time to buy crypto?
It depends on when in the cycle you buy and how you manage risk. Early buyers in past bull runs gained the most, while many who bought near the peak suffered large losses in the following bear market. Buying gradually, sizing positions carefully and having a profit-taking plan matters more than the label.