Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
spanning several days
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "spanning several days" is correct and usable in written English.
It can be used to describe an event, activity, or process that occurs over a duration of multiple days. Example: "The conference will be held over a weekend, spanning several days of workshops and discussions."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(20)
lasting several days
spanning multiple days
spanning several months
spanning a few days
for a handful of days
on a few occasions
some days
on a few moments
on a few days
for a few days
for several days
on occasion
a handful of times
over a couple of days
during a few days
certain days
equivalent of days
a few days spread
in a matter of days
within a short period
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
8 human-written examples
We need to design delivery tours spanning several days, covering huge geographic areas, and involving product pickups at different facilities.
Deepavali (Diwali), a Hindu festival of lights spanning several days, is observed by many Indian Malaysians, while Christmas is the principal holiday of the Christian community.
Encyclopedias
Earlier literature results suggest that the evolution of sandbars depends nonlinearly on the wave forcing and that the sandbar position at a specific moment contains 'memory', that is, time-series of sandbar positions show dependencies spanning several days.
Science
We find a small performance increase for long-term predictions (>40 days) with nonlinear models, indicating that nonlinear effects expose themselves for larger prediction horizons, and no significant difference between nonrecurrent and recurrent methods meaning that the effects of dependencies spanning several days are of no importance.
Science
Spanning several days, it dramatizes the showdown between the White House and The Washington Post as that paper balanced the threat of criminal prosecution against its desire to burnish its journalistic chops by publishing the Pentagon's secret history of United States' involvement in the Vietnam War.
News & Media
While many did so, some others have finished the training sessions in multiple sittings, spanning several days in a week.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
This is achieved through remote monitoring of lab experiments that span several days.
In Detroit in 1967 a raid of an unlicensed bar turned into a riot that spanned several days, resulting in dozens of deaths and thousands of arrests.
News & Media
The recordings span several days and capture operatives discussing in advance of Khashoggi's arrival their plans to subdue and kill him, according to Western intelligence officials.
News & Media
Heat waves may span several days to several weeks and are significant causes of weather-related mortality, affecting developed and developing countries alike.
Encyclopedias
However, the short physical half-life (109.8 min) of 18F limits the study of pharmacokinetics that span several days, as can be the case for large molecules like monoclonal antibodies.
Science
Expert writing Tips
Best practice
For clarity, specify the start and end dates alongside the phrase "spanning several days" to avoid ambiguity about the exact duration.
Common error
Do not use "spanning several days" without providing context about the event or activity. Ensure the reader understands what is occurring over that period. Without context, the phrase lacks meaning and can confuse the reader.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "spanning several days" functions as an adjective phrase modifying a noun. It describes the duration or extent of something, indicating that it occurs or continues over a period of multiple days. As Ludwig shows, it is frequently used to specify timeframes for events, activities or processes.
Frequent in
News & Media
27%
Science
33%
Academia
10%
Less common in
Wiki
13%
Encyclopedias
8%
Formal & Business
6%
Ludwig's WRAP-UP
The phrase "spanning several days" is a grammatically correct and commonly used way to describe an event or activity that takes place over multiple days. Ludwig's analysis of various sources—including news media, scientific publications, and academic texts—indicates that it functions primarily as an adjective phrase to specify duration. The phrase exhibits a neutral register, making it appropriate for both formal and informal contexts. While Ludwig AI confirms its correctness, remember to use the phrase with sufficient context to avoid ambiguity. Alternatives such as "lasting a few days" or "extending over a number of days" may be used to add variety to your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
lasting a number of days
Replaces "spanning" with "lasting" and "several" with "a number of", emphasizing duration.
extending over multiple days
Substitutes "spanning" with "extending over" and "several" with "multiple", highlighting the extension of time.
encompassing numerous days
Uses "encompassing" to convey inclusion and "numerous" to emphasize a large number of days.
covering a period of days
Replaces "spanning several days" with a more generic description using "covering a period of days".
taking place over a few days
Uses "taking place" to describe the occurrence, and "a few" instead of "several", slightly shortening the duration.
continuing for some days
Focuses on the continuous nature using "continuing", replacing "several" with "some" for a less specific quantity.
taking a number of days
This alternative emphasizes the time required for something to happen, using 'taking' instead of 'spanning'.
occurring across a handful of days
Employs "occurring across" and "a handful of" to give a more casual and less precise sense of duration.
going on for a number of days
Uses a more conversational tone with "going on", suitable for informal contexts.
running for a few days
Uses "running" metaphorically to describe the event's progression over time.
FAQs
What does "spanning several days" mean?
The phrase "spanning several days" means that an event, activity, or process takes place over a period of more than one day, but typically less than a week. It indicates a duration that is neither very short nor very long.
How can I use "spanning several days" in a sentence?
You can use "spanning several days" to describe events, projects, or processes that occur over multiple days. For example: "The conference is "lasting several days", with workshops and presentations each day." or "The investigation "extended over several days" as detectives gathered more evidence".
What are some alternatives to the phrase "spanning several days"?
Some alternatives include "lasting a few days", "extending over a number of days", or "taking place over multiple days", depending on the specific nuance you want to convey.
Is it correct to say "span several days" instead of "spanning several days"?
Yes, "span several days" is correct. "Span" is the verb form, while "spanning" is the present participle. You might say "The festival will "span several days"" or "The festival, "spanning several days", will feature many events".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested