We will do the run with Benjamin in his cross country wheelchair, so I will have to learn to run pushing it.
I am used to using it walking, but I will have to adjust my running technique because I may have problems kicking the chair, and I will not be able to use my arms like I usually do when I am running.
So, we went for a try out this morning on a course that is about the same as the actual race (http://ridewithgps.com/trips/1615602).
The main surprise was how hard it was on my arms - I will have to decide whether to run with elbows locked to reduce the strain, or maybe move closer to the handle so I can push it along with my body to some extent.
Still, we did the 5 km in less than 24 min - a good bit slower than I would expect doing the run by myself, but not too bad for a first attempt with the wheelchair.