Your plan in four answers
Set for April 4, 2027, about 23 weeks out.
- Distances
- Half marathon, 10K
- Terrain
- Flat
- Taper starts
- March 23, 2027
Course
The Florence Half Marathon course
The 43rd Half Marathon Firenze runs on Sunday, April 4, 2027, starting at 9:00 a.m. on the Lungarno della Zecca (near Via delle Casine) and finishing in Piazza Santa Croce. The 21.097 km course is two laps through the historic streets and monuments of medieval Florence, closed to traffic, flat and surfaced with asphalt and stone paving; the organizers warn that the stone is uneven in places, so watch your footing.
Read the full course notes
There are four water and food stations on the course plus a final one at the finish, and the time limit is 3 hours. The field is capped at 5,000 for the half and 1,000 for the non-competitive 10 km, which starts in its own grid at the same time, and in 2025 about 6,000 athletes from 82 nations took part.
- Terrain
- Flat
- Distances
- Half marathon, 10K
- Weather on race day
- Early April in Florence is spring weather, with average highs around 17 °C and lows around 7 °C at the start of the month. There is about a 27% chance of a wet day, and winds are light, around 12 km/h, mostly from the south. A 9:00 a.m. start usually means cool, comfortable running, so wear a throwaway layer before the start and be extra careful on the stone paving if it has rained.
What to train for
A flat two-lap course is made for even pacing, so build tempo runs of 6 to 10 km at goal half marathon pace and practice running the second half as fast as the first.
Since parts of the route are on stone paving, include some runs on uneven surfaces or cobbles to strengthen ankles and train quick, light steps.
Long runs of 16 to 20 km will make the distance feel familiar, and the 3-hour limit leaves room for anyone stepping up to their first half. Arrive early: a group warm-up session with coach Fulvio Massini starts in Piazza Santa Croce at 8:15 a.m.
Sample week
A sample Florence Half Marathon training week
A week from the middle of the build, about six weeks out. Your plan sets the real distances and paces from your own fitness and adjusts them every week as you train.
- Monday
- Rest, or 20 minutes of mobility
- Tuesday Key session
- Intervals: 5 × 1 km at 5K to 10K effort, easy jog between
- Wednesday
- Easy run, 8–10 km
- Thursday Key session
- Goal-pace run, 11 km with 6 km at race pace
- Friday
- Recovery run, 6 km, or cross-train
- Saturday Key session
- Long run, 16–19 km easy
- Sunday
- Easy run, 6 km, then 6 relaxed strides
Your build to race day
Taper
Tapering for the Florence Half Marathon
Start the taper ten to fourteen days before race day. Cut your weekly volume by about a third, then by half in race week, and keep a few short efforts at race pace so your legs stay sharp. The course is flat, so pacing decides the day: rehearse your goal pace in short segments during race week. With the race on April 4, 2027, your taper starts around March 23, 2027.
Also in Claude
Ask Claude for this plan
Add AthleteSpace to Claude once, then paste this prompt and put in your own numbers.
Build me a training plan for the Half Marathon Firenze on April 4, 2027. I run [distance] a week, [days] days a week, easy pace [pace].
Florence Half Marathon training questions
How long should I train for the Florence Half Marathon?
Most runners give a half marathon twelve to sixteen weeks of focused training on top of an existing base. The plan above counts back from your actual race date, so if you have less time than that it builds the best plan the remaining weeks allow rather than pretending you have longer.
Is the Florence Half Marathon course hilly?
Flat. The 43rd Half Marathon Firenze runs on Sunday, April 4, 2027, starting at 9:00 a.m. on the Lungarno della Zecca (near Via delle Casine) and finishing in Piazza Santa Croce.
What is the weather usually like at the Florence Half Marathon?
Early April in Florence is spring weather, with average highs around 17 °C and lows around 7 °C at the start of the month. There is about a 27% chance of a wet day, and winds are light, around 12 km/h, mostly from the south. A 9:00 a.m. start usually means cool, comfortable running, so wear a throwaway layer before the start and be extra careful on the stone paving if it has rained.
When should I start tapering for the Florence Half Marathon?
Start the taper ten to fourteen days before race day. Cut your weekly volume by about a third, then by half in race week, and keep a few short efforts at race pace so your legs stay sharp. The course is flat, so pacing decides the day: rehearse your goal pace in short segments during race week. With the race on April 4, 2027, your taper starts around March 23, 2027.
Do I need an account to get a Florence Half Marathon training plan?
No. The plan above builds in your browser with no account, no email, and no card. Make a free account only if you want to keep it, log your runs against it, and have the coach keep adapting it as your training goes.