You have trained for months, booked the flights, and now you are about to undo a chunk of that work by arriving at your race dehydrated, jet-lagged and sprinting for the toilet. The travel is part of the race. Treat it like it is, and you protect everything you built.
Destination races are having a moment. A sunny marathon, a European 70.3, a trail race somewhere with better scenery than your local loop. They are brilliant, and they are also where a lot of hard-earned fitness quietly leaks away in the few days before the gun, because the athlete planned every session and then winged the single biggest variable: actually getting there in one piece. Let us fix that.
Travel fatigue and jet lag are two different problems
Travel fatigue is the toll of the journey itself: the early start, the airport, the hours sat still, the broken sleep, the dry air, the dehydration. You get it even on a short hop across no time zones at all. Jet lag is a separate beast. It is your body clock being out of sync with local time after crossing roughly three or more time zones, and it brings disrupted sleep, daytime fatigue, gut upset and a measurable dip in how you feel and perform. Singapore to Bangkok is not jet lag. Singapore to London very much is.
Eastward costs roughly twice as much as westward
This is the number most people get wrong, including a lot of race guides. The consensus figures are about one day per time zone to resynchronise when you fly east, and about half a day per zone when you fly west. So the same six-zone trip is roughly six days in one direction and three in the other.
Why the asymmetry? Flying west you shift your clock later, flying east you drag it earlier, and the body shifts later far more willingly. The practical message: an eastward race deserves more respect and more days on the ground before you compete.
One warning for the very long eastward trips, which matters if you are flying Singapore to Europe or similar. Cross eight or more zones going east and your body can resynchronise the wrong way round, shifting later instead of earlier, which leaves you worse off than if you had done nothing. On those trips it is worth getting proper advice on light timing rather than improvising.
The errors that cost you the race
Arriving the day before a big race across time zones
The classic, heartbreaking error. You land jet-lagged, sleep badly in a strange bed, and race on a body clock that firmly believes it is 3am and you should be unconscious. If the time difference is significant and the race genuinely matters to you, get there earlier. The flights cost more. So did the training you are about to waste.
Treating the flight as lost time instead of a recovery session
Hours sat still, dry cabin air and questionable food will leave you stiff, dehydrated and inflamed if you let them. Hydrate steadily, get up and move, go easy on the wine and the crisps, and sleep on destination time where you can. And wear proper medical-grade compression socks, which is not a comfort preference: the evidence that they cut the risk of symptomless clots on long flights is rated high quality.
Experimenting with food and fuel in a new country
Race week abroad is the single worst time to try unfamiliar food, unfamiliar water, or a different brand of gel because it was all the local shop had in stock. New bugs plus new foods plus race nerves is a gut disaster with a countdown timer on it. Keep everything you put in your body boring and familiar.
Forgetting your cycle in the planning entirely
If your symptoms affect your training and racing, where your period is likely to fall on race day genuinely matters. Think about it well in advance so you can plan around it calmly, rather than being caught out and anxious in a hotel room the night before. If you are considering anything hormonal to shift the timing, read the section below first, because it is not a decision to make casually.
Your race travel plan
How to arrive ready to race
Shift your clock before you fly
For a few days before an eastward trip, go to bed and get up earlier, and get bright light into your eyes in the morning. For a westward trip, nudge everything later, and avoid bright light first thing, because morning light pulls you the wrong way. Even a partial shift before you leave means far less to claw back once you arrive.
Arrive early for anything that matters
Budget roughly a day per time zone flying east, half that flying west, and get as close to it as life and money allow. For a genuine goal race across several zones, that early arrival is not a luxury. It is part of the performance plan, as real as any long run you did to get there.
Own the flight
Set your watch to destination time the moment you board, and eat and sleep to that new time from then on. Drink water steadily, go easy on alcohol and excess caffeine, get up and move every hour or two, and wear medical-grade compression socks. The goal is simply to land as fresh as possible.
Use light and routine on arrival
Get outside into daylight at the right local times to drag your body clock across to its new home. Keep meals, movement and bedtime on local time from day one, even when every cell is arguing. Morning larks tend to handle eastward travel better and night owls westward, so know which one you are.
Lock your fuel down completely
Travel with your own tried-and-tested gels, bars, electrolytes and even some staple breakfast food from home. Drink bottled or filtered water anywhere the tap water is a question mark. Keep your race-week eating deliberately boring, familiar and fully tested in training. Boring is fast. Adventurous is a story you tell from the toilet.
Melatonin, honestly
Melatonin comes up constantly, so here is the straight version. It is one of the better-evidenced things for jet lag, which sounds impressive until you realise the whole field is thin. The Cochrane review found most trials showed a benefit on flights crossing five or more zones, at doses of 0.5 to 5 mg taken at bedtime in the new time zone, with higher doses no better.
Two things people are not told. First, it is a prescription-only medicine in both the UK and Singapore, and the licensed product in both places is a 2 mg slow-release tablet, which is precisely the form the Cochrane review found relatively ineffective for jet lag. Second, the sachets and gummies people buy abroad or online are unregulated supplements with no guarantee of what is actually in them.
So: talk to a pharmacist or doctor rather than improvising, do not take it during the day because that makes you sleepy and actually delays your adaptation, and be aware there are reported interactions including with warfarin and in epilepsy. It is not a magic bullet and it is not a free one.
The cycle question, and the risk nobody mentions
Some women want to shift their cycle so their period does not land on race day. That is a reasonable thing to want, and it is a conversation for your GP well ahead of time, not a last-minute experiment in a foreign pharmacy.
But there is a specific risk here that race guides almost never flag, and it matters enormously in a post about flying. Both of the usual approaches, taking norethisterone to delay a period or running combined pill packets back to back, carry an increased risk of blood clots. You are then proposing to sit still on a long-haul flight, often dehydrated, often heading somewhere hot. Those risks stack. The prescribing information for period-delay tablets literally tells you to move around as much as possible if you are flying, and they are not suitable at all if you have a history of clots.
I am not telling you not to do it. I am telling you that the GP conversation is about clot risk and your own history, not just about dates. And it is worth knowing that the performance case for timing your cycle is weak: the best meta-analysis found any effect of cycle phase on performance to be trivially small. So do this for symptom management, if your symptoms genuinely wreck a race day. Do not do it chasing an edge that the evidence does not support.
Free tool
The Race Travel Planner
Put in your race date and the time zones you are crossing. It works out when you should land, how to shift your clock before you fly, and what each day before the race should look like.
Open the toolPack like someone who has done this before
A good travel race starts with a boring, thorough kit bag. Carry your race kit, your shoes and anything you cannot easily replace in your hand luggage. Lost luggage the day before a goal race has ruined more events than jet lag ever has, and it is entirely preventable.
Pack your own fuel, electrolytes, familiar breakfast staples, a refillable bottle, any medication you rely on, and whatever helps you sleep in a strange room. None of it is glamorous. All of it protects the months of work sitting in your legs.
The night before, and race morning, in a strange place
A foreign hotel room is not your kitchen, so control what you can. Know where race-morning breakfast is coming from before you go to bed, ideally food you brought, rather than gambling on a buffet that opens too late. Lay your kit out the night before. Keep your routine as close to normal as the setting allows.
Now, the sleep bit, and I am going to be straight with you rather than reassuring. You will probably read somewhere that one bad night before a race does not matter. For endurance athletes that is not true. The 2023 meta-analysis of sleep deprivation and endurance performance found a moderate impairment, and it was worse for efforts lasting over thirty minutes, which is to say almost every race you are likely to be travelling for. One controlled study found a 10km time trial around five percent slower after a single night of partial sleep loss.
What is true is that banking good sleep across the week beforehand reduces the damage, though it does not erase it. So the sleep that counts is the whole trip, not the single night before. Protect it across all the days you are there, arrive early enough that you get several of them, and then let race-eve be whatever it turns out to be. Lying awake catastrophising at 2am is the one thing guaranteed to make it worse.
Heat deserves more credit than it gets
If you are travelling somewhere warmer than home, the heat is often the single biggest performance variable, bigger even than the jet lag. And here is the encouraging bit that usually gets buried: you get most of the benefit fast. Full heat acclimatisation takes ten to fourteen days, but roughly 75 to 80 percent of the adaptations land in the first four to seven. Your heart rate response settles within about five days, and your plasma volume expands by day three or four.
So arriving five to seven days early for a hot race is genuinely worth it, and not just for the jet lag. What it will not fully buy you is the sweating adaptations, which need longer. Those gains fade fast too, lasting about a week, so top up any home heat prep with roughly one session every five days.
Practically: rehearse your hydration and electrolyte plan in training, not on a baking start line. Start more conservatively than your home pace, and get your sodium right, around half a gram to a gram per litre of fluid for efforts over an hour.
And one genuine safety point, because women in long events are the highest-risk group for it. Do not drink to a schedule regardless of thirst. Overdrinking plain water in a long, hot race can dilute your blood sodium to dangerous levels, and that is a medical emergency, not a minor mistake. Drink to thirst, take your sodium with it, and do not finish the race heavier than you started.
Come home in one piece too
One last thing almost nobody mentions: the journey home. You will be tired, a little broken, and facing the same flights and time zones in reverse. Do not add a brutal travel day onto a hard race and expect to bounce. Hydrate, move gently, wear the compression socks again, and give yourself real recovery time once you are back. The trip is over when you are home and recovered, not when you cross the line.
Great travel does not feel heroic. It feels almost boringly uneventful. You arrive with enough days to settle in, you sleep, you eat the food you brought with you, you drink your water, and you jog your legs out gently in the local park. Then you race the race you actually trained for, rather than the race your journey left you capable of. That, honestly, is the whole trick, and it is entirely within your control.
Ten questions, two minutes. Tells you whether to push this week, hold steady, or back off.
Is this you?
- You have raced abroad before and spent the first few days feeling like a wrung-out dishcloth.
- You train meticulously and then completely wing the travel, and wonder why race day feels so flat.
- You have a goal race overseas coming up and no actual plan for getting there in one piece.
Ready to stop guessing?
I coach female endurance athletes with plans built around real bodies and real lives. If you want yours built properly, come and work with me.
Apply to work with me →Frankie x