In 2023, on the morning of a trail marathon, I forgot my socks. Real socks. The merino pair I'd done every long run in. I wore cotton borrowed from a friend. By kilometre 18 my heels had opened up. The race went one way, my finish time went another, and the trip home was very quiet. The Kaveri Trail Marathon does not care about your socks until it suddenly does. Race-day checklists exist for these moments — the small, stupid, race-ending ones.
The race in context
The Kaveri Trail Marathon runs along the Kaveri river near Srirangapatna in mid-November. The surface is trail. The course rolls gently and traces the river, with long riverside stretches near the Ranganathittu Bird Sanctuary. The weather is post-monsoon: the southwest monsoon has cleared, the mornings can be cool, and the afternoon sun still has bite once it climbs. It is one of the more beautiful races in southern India and one of the easier to underestimate.
This piece is a race-day checklist. It assumes you've done the training. If you haven't, no checklist saves you. The structured trail and ultra plans handle the training side; the STRIDD plan generator can build a Kaveri-specific block.
What changes about a trail marathon
Trail marathons aren't just road marathons on dirt. The kit list shifts. Shoes have lugs. Socks become more important, not less. Aid stations are sparser. You carry more of your own fuel. You think about footing, not just pace. The race-day checklist below is built for this difference.
The week before
The race begins the Monday before, not the morning of. From Monday to Wednesday, run easy and short. Thursday: a shakeout with two or three strides on a soft surface. Friday: full rest or 20 minutes of walking. Saturday: very easy 20-30 minutes early in the day, then off your feet by lunch.
I made my worst race-week mistake in 2021, a humid Karnataka half in October. I added a tempo on Thursday because I felt fresh. I showed up Sunday with dead legs. The lesson: race week is not a fitness window, it's a delivery window.
Eating like your gut already knows you
Stick to food your gut trained on. Rice, dosa, idli, roti, dal — whatever you eat on long-run mornings. Increase carbohydrate gently in the final 48 hours but don't change cuisines. Don't try new restaurants the night before. Don't carb-load with food your stomach has never seen before. Our heat and monsoon running guide has the broader fuelling logic; for race week, the rule is just "familiar food, slightly more of it."
The night-before kit
Lay everything out the night before. Don't pack in the morning.
- Shoes: trail shoes with at least 60-80 km on them. Trained-in. Lugged enough for damp dirt in the shaded patches and the occasional loose section.
- Socks: merino or technical, the pair you've done long runs in. Cotton will betray you. Pack a spare pair in your drop bag if there is one.
- Shorts/tights: the pair you've run long in. No experiments.
- Singlet or technical T: light, breathable. Even in post-monsoon November the sun will wet anything cotton once the morning warms.
- Cap: non-negotiable. The Kaveri trail has open stretches even though it follows the river.
- Sunglasses: if you trained in them.
- Anti-chafe balm: thighs, underarms, bra straps, nipples, wherever your body has betrayed you before.
- Gels and salt: the brand and flavour you've used in training. Total grams roughly matched to your expected finish time.
- Soft flask or handheld: if you've trained with one, bring it. Don't add it new on race day.
- Plasters and tape: for whatever your body habitually complains about.
- Bib: pinned the night before. Front, four corners.
The bag for after
A fresh shirt. A dry pair of socks. Slippers or sandals. A towel. Snacks. Water. A small first-aid pouch. Your phone charger. The post-race walk to your accommodation is more pleasant when your feet aren't still in damp trail shoes.
Race morning, hour by hour
Wake 3 hours before the gun. Drink water. Use the bathroom. Eat your usual race breakfast — toast and peanut butter, banana, coffee. Whatever your body trained on.
2 hours before: finish breakfast. Sip water and electrolyte. Begin the slow process of getting kit on.
90 minutes before: leave for the venue if you're not staying near the start. Roads near Srirangapatna are quiet but race-morning logistics are local and informal.
60 minutes before: arrive. Find the bag drop. Find the toilets. Find the start corral. Walk the first 100m of the course if possible to see what surface you're starting on.
30 minutes before: warm up. Easy jog for 8 minutes. A few dynamic mobility drills. Two or three strides on the start surface.
10 minutes before: enter the corral. Stop drinking water. Breathe.
The first kilometre
Don't race it. The trail rewards patience. The first kilometre on cool legs feels easy and lies to you. Run slower than you think you should. The race begins at kilometre 25, not kilometre 1.
During the race
Walk every aid station. Drink something at every station from kilometre 8 onwards. Eat your first gel before you feel hungry. Watch your footing on the shaded riverside patches, where post-monsoon moisture can linger and the ground stays a little soft.
The long riverside sections run close to the Ranganathittu Bird Sanctuary. It is a protected bird habitat, so keep the noise down through those stretches, stay on the marked trail, and carry your wrappers to the next bin rather than dropping them.
If you cramp, you under-salted earlier. Take a salt tablet, walk for a minute, and ease back into running. If you bonk, you under-fuelled. Eat. Drink. Walk. Then run.
Use the STRIDD pace calculators before race day to set a realistic target. On the day, run by effort more than by pace — the trail surface and the building warmth will make your watch lie to you.
The finish and after
Walk for ten minutes after crossing the line. Don't sit. Don't lie down. Drink water and electrolyte. Eat something within an hour — anything you can keep down.
Change out of sweaty kit as soon as you can. Skin in damp clothing turns into rashes within the hour. Get a fresh shirt and dry socks on, even if you're not heading home yet.
One last thing
The Kaveri Trail Marathon is one of those races that gives back exactly what you bring. Show up trained, rested, kitted right, fed familiar food, and the river will reward you. Show up improvising and the trail will improvise back. The checklist is the boring part. The race is the beautiful part. Get the boring part right.
The Kaveri Trail Marathon event page has the latest race details, including the distance options and the route map. Browse the rest of Running Lab for related reading on trail running.