The BMC insurance policy which covers cycle touring is the Trek one, the Rock policy covers mtbing. It is in the little italic part at th bottom of the section saying 'other sports covered' as below:
What's covered:
Mountain walking in Britain – including the use of crampons and ice-axes. All mountain-walking trips including adventurous treks in the Alps and Himalaya. Via ferrata. Recognised trekking routes with simple glacier crossings and scrambles. Non-technical ascents of easy trekking routes on peaks that do not require the use of technical climbing equipment.
Examples: Tour du Mont Blanc, Walkers' Haute Route Chamonix -Zermatt, Vie ferrate in the Pyrenees and Dolomites, Mt Toubkal. Kilimanjaro (except Umbwe/Western Breach, Mt Kenya (except Batian & Nelion). Baltoro Glacier-Concordia and K2 Base Camp trek, Annapurna Circuit, Gokyo Lake & Cho La Pass, Everest Base Camp. Normal trekking routes on: Kala Patar, Naya Kanga, Pisang, Ramdung, Stok Kangri, Mera Peak and Island Peak (Imja Tse) but if combined via Amphu Labsta is ‘Alpine & Ski’. Inca Trail, Machu Picchu. Normal trekking routes on: Cotopaxi, Chimborazo.
What’s not covered:
Ascents of graded climbs. The crossing of high-altitude passes with snow covered crevasses. Examples: Biafo-Hispar route, Amphu Labsta (Mera Peak-Island Peak), Gondogoro La, Tent Peak (Tharpa Chuli), Paldor, Parchamo, Pokalde, Lobuje East. Trekking above 6,500m (for this you'll need our Alpine & Ski policy)
Other sports covered:
Canoeing and Kayaking (inland and coastal waters only), Cycle Touring, Horse Riding (excluding racing and jumps), Rowing, Snorkelling, Swimming, Surfing.