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MTB Trail Mapping Workflow with OpenStreetMaps

Published June 5, 2012

With recent map drawing activities (1, 2, 3) I’ve been asked about the process I use for creating maps. What follows here is the workflow I used with OpenStreetMap (OSM) for the CRAMBA Stony Creek MTB Trail Maps, and hopefully others will find it useful.

I expect I’ll be following this same workflow for the next maps created, and even possibly revising previous ones using this process because it provides more solid base data than my previous method which consisted of little more than manually tracing SVGs of GPS tracks in Illustrator. It also helps get more map data in OSM, which is basically the cartographic version of Wikipedia.

One note, using OSM data in your maps requires that the resulting map be licensed under the Creative Commons Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0) license. This basically means that anyone else can redistribute and reuse the map (or portions thereof), as long as they provide appropriate attribution and license their version in a similar way. As I’m intending these maps to be freely used by the general public (as part of my work with CRAMBA) I’m happy to do so, but others should be aware of these restrictions before getting too far along in the process.

Here’s the workflow:

Continue readingMTB Trail Mapping Workflow with OpenStreetMaps
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New Stony Creek MTB Trail Maps

Published June 5, 2012

I’ve been unhappy with Stony Creek’s official mountain bike trail map for a while now, as its routing is a bit physically inaccurate and missing some trails used during races. This led me to want to draw my own, and with recent forays into OpenStreetMap proving quite successful I’ve been able to get working on the map itself.

Tonight everything came together and I was finally able to publish the maps, and as a bonus I also documented three of the more popular routes. The more-formal announcement for these was made over on CRAMBA.org, but each map can also be seen here:

· Regular Map
· Fun Promotions 6 & 12 Hour Race Route
· Tailwind XC Race Route
· Wednesday Night MMBA / CRAMBA Group Ride Route

I’m sure some changes will be needed down the line, but for now I’m quite happy with how they came out. Making maps is fun.

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Coat Hanger Muffler Hanger

Published June 3, 2012

After work on Friday I noticed that Danielle’s muffler was hanging off her car a bit more than normal and that the support strap had broken. I finally had a chance to take a look at it this evening, and I ended up hanging it back up using two extra thick coat hanger segments (from hangers for a comforter) to hold it up. I hope (and suspect) that this’ll hold until she gets a new car.

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Don’t Let Your Silverware Nestle

Published May 31, 2012

If you’ve ever pulled out a spoon out of the dishwasher that just didn’t seem like it got as clean as everything else there’s a good chance it had nested with an adjacent spoon, blocking the dirty part from being directly sprayed with water / cleaning solution.

When placing silverware in the basket in a dish washer, set pieces so they alternate back and forth in the tray and they will be highly resistant to nestling together when jostled around by water. The result? Cleaner silverware!

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100 Miles, Turtle Rescue, and Rain

Published May 27, 2012

In preparation for Lumberjack 100, the training plan that I’d been following dictated an 8 hour ride today. Erik also had to ride today (but only for seven hours), and we ended up planning to meet at the Clarkston Road crossing of the Paint Creek Trail at 6am. This got pushed to 6:20am as I had to run back home and pick up a forgotten bottle and my shoes (two separate return trips), but eventually we were on our way.

The ride involved laps of Bald Mountain, Addison Oaks, and the Four Corners (Indian Lake, Barr, Drahner, and Lake George), which worked out well and tended to put us back in Addison Oaks right around the times that we were due to mix up more drink stuff. Due to a bit of slacking (and frequent pee breaks) and talking with Shari at Addison we ended up with almost two hours of downtime during the ride, so it was good that we started out so early.

Just after the 7 hour (moving time) mark we were near the cabins at Bald Mountain and Erik headed back towards his car while I started thinking about what I wanted to do for the next hour. With my computer saying I’d already ridden ~82 miles, I got an itch to try and go for a full 100 miles (often referred to as a century). I finished up the lap of Bald Mountain then rode back over to Addison Oaks, as mental calculations told me this should put things at just past the goal.

Despite angry looking clouds and a beautiful front passing over us this morning, we missed getting rained on. Half-way through this final lap of Addison Oaks the skies once again darkened, but this time I wasn’t so fortunate. Heavy winds gave way to drips, and by the time I got back to Bald Mountain a solid rain was falling. This lasted throughout the rest of the trail and for most of my ride back, but ended just as I reached the parking lot, which was fortunate as it made putting things away and changing much easier.

All said, this was a really good ride. I ticked off just over 100 miles, for the first time ever. While tired I still could have ridden more, as my legs were (and still are) feeling pretty good and not too much of me is sore. Reviewing the post-ride data I think I should probably have kept my heart rate a little higher to conform to the training plan requirements, but hopefully things will be fine in a couple weeks.

One odd thing from today’s ride: we kept encountering turtles, some of whom needed a bit of help. Two of them were on roads (and bound to get hit), with one having clearly fallen down a dirt embankment which it wouldn’t been been able to climb. These were relocated off into the brush in the direction they had been going. Three more were found on trails where bikes could easily hit them, but only two of these were moved as one was a basketball-sized snapping turtle (seen above). Finally — and unfortunately — there was a sixth turtle on Indian Lake Road which had already been hit.

Now that I’m home and having finished a large meal from Khom Fai I think it’s time to consider a shower and then bed. I’ve been up since ~4:05am and sleep is sounding good.

Here is the GPS plot and stats for today’s ride: link.

Here’s some photos from today’s ride:

· Erik and the snapping turtle found along the two track at Addison Oaks.
· Detail of the snapping turtle found along the two track at Addison Oaks.
· Another view of Erik and the snapping turtle sitting along the side of the two track at Addison Oaks.
· 101 miles in 08:46:10 of moving time, shown on the Garmin Edge 500. My longest ride to date.
· Gang Gai (red curry) from Khom Fai, a nice post-bike-ride meal.

If you’re interested here’s a few more photos taken during yesterday’s ride on the dunes southeast of Sleeper State Park. This was a fun ride, but I found that I couldn’t keep going in sand over ~4″ deep:

·The Mukluk on some dunes just southeast of Sleeper State Park.
·Sand along the power lines just south of Sleeper State Park. This was too loose for me to ride.
·The Mukluk leaned against an old barbed wire fence somewhere southeast of Sleeper State Park.
·Somewhere along the way I picked up a stick.
·Closer view of the large stick in the frame. It was easy to remove and basically fell out.

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Down the OpenStreetMap Rabbit Hole

Published May 25, 2012

I’ve been interested in making mountain bike trail maps for a while now, resulting in my drawing the official River Bends and Addison Oaks maps. Stony Creek Metropark has some great trails as well, but it’s MTB trail map is unfortunately lacking. It is missing some segments used during races, has some one-way markings that don’t match what’s actually signed on the trail, and isn’t geographically accurate enough to be used for trail planning.

My original intention was to record all of the trail segments at Stony Creek myself using a GPS then draw a map similar to the ones for Addison Oaks and River Bends, but after looking on OpenStreetMap (OSM) I found that most of the trails at Stony Creek were already mapped. Thus if I am willing to license my map in an appropriately open manner I can use this data, saving myself a bunch of time.

Since a few small connectors that I wished to include were missing I headed out to Stony Creek this evening and recorded GPS data for only the missing segments. Most of these were connectors used primarily during races, but as they are passable throughout most of the year I wanted to include them. I then brought the GPX into JOSM, edited the map, and submitted the changes. This is a pretty easy task if one is familiar with basic CAD tools.

While the changes aren’t yet reflected in the main online map, the changes have been submitted and it does show when new data is manually downloaded, so I imagine it’s only a matter of time before it’s visible to the public. I will then use this OSM to make my MTB-specific map, complete with markers for things such as log piles, rock gardens, etc.

I suspect that this ease of editing is going to change my mapping workflow in the future. There’s a very good chance that any new maps which I do will first go into OSM, then this data will be pulled out to generate the actual map. Barring any license constraints, of course.

Looking further it appears that River Bends’ trails aren’t yet on OSM. Looks like I’ve got some work to do there as well…

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PLRA Is Finally Enjoyable To Me

Published May 22, 2012

This afternoon after work I finally headed out to Pontiac Lake Recreation Area to ride the trails by myself. While I’ve been there a few times before with people showing me around, something about the trails there had yet to click with me and I wasn’t sure if I liked them or not. After riding two laps today I was finally recognizing most of the route, and I even had a feel for what was coming up after some parts. With a bit more experience there I’ll be able to do a better job carrying momentum into more climbs and then it’ll likely end up being even more fun.

Today I ended up riding two laps without stepping off the bike, with a parking lot to parking lot time of 1:49:22. This includes all of the optional Hard segments that I know of: the switchbacks about half-way in and the tight / rooty area near the end. Even though I didn’t really feel warmed up until after the triple puke climb on lap two, this ride was really enjoyable. The weather was absolutely perfect, everyone I encountered on the trail was friendly, and it fit in nicely as a good after work ride. I need to head out there more often.

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Gulden Draak 9000 and Brewery Vivant’s Triomphe

Published May 21, 2012

 

Here are two tasty beers that I’ve had recently: Gulden Draak 9000 Quadruple and Brewery Vivant’s Triomphe Belgian Style India Pale Ale. I’d also recently had Farmhand (also canned) and Big Red Coq (on draft at Clubhouse BFD), but I don’t have photos of those.

Each of these beers is quite excellent, but I particularly like Brewery Vivant’s canning. It works out very well, and getting a full pint in each serving (as opposed to a typical 12 oz. bottle) is a nice change of pace. The only part I don’t care for is the plastic can holder. It’s got quite a bit of plastic in it, and it’s fairly difficult to remove from the cans themselves.

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Group Ride at River Bends and CRPT

Published May 17, 2012

Two weeks ago while out for a quick lunchtime ride at River Bends I started thinking about how it’d be nice to have a group ride there connecting it and the Clinton River Park Trails. So, later that evening I set up a ride for the 10th. Rains forced me to postpone this a week, with today being the day for the ride.

We had a much better turnout than I expected, with a total of 17 people showing up for the ride. A couple people dropped off here and there to head home or because they’d gotten enough riding in, but most of the group stuck together until the end, returning to the River Bends parking lot just as the sun was going down.

Coupled with riding up and back from home and an early lap I ended up getting 36.52 miles in, and just a smidgen over three hours moving time. All of this and the beautiful weather made for a great evening.

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