Did a parkrun event (www.parkrun.org.uk) this morning and they had pace runners there this week with target times printed on their back. One of them had pi prin

Did a parkrun event (www.parkrun.org.uk) this morning and they had pace runners there this week with target times printed on their back. One of them had pi printed on his shirt and it wasn't obvious what his actual target time was. The run begins at 9am. It was only later that we realised he was _probably_ setting pace for 26 minutes (i.e. to end at 9.26am).